89 
EXPERIMENT NO. 51. 
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 moderate westerly wind. 
Temperature in car at beginning of experiment, 71° F. 
Relative humidity in car at beginning of experiment, 48 per cent. 
Time of exposure, 2 hours (12 m. to 2 p. m.). 
Temperature in car after opening and airing 15 minutes, 74° F. 
Relative humidity in car after opening and airing 15 minutes, 58 per cent. 
[+ means growth; — no growth.] 
Organism. 
Place of exposure in car. 
Result. 
B . coli communis 
Toilet room 
+ 
Smoking room 
-f 
Drawing room 
+ 
Berth, upper No. 2 
+ 
Berth, lower No. 7 
+ 
B. pyocyaneus 
Toilet room 
+ 
do 
+ 
Smoking room 
T" 
Floor main sleeping compartment 
+ 
Berth, upper No. 2 
+ 
Berth, upper No. 11 
+ 
Berth, lower No. 5 
+ 
B. typhosus 
Toilet room 
do 
Smoking room 
Drawing room 
+ 
Floor main sleeping compartment 
Berth, upper No. 11 
Berth, lower No. 12 
+ 
Staph, pyog. aur . . 
Toilet room 
+ 
Smoking room 
+ 
Floor main sleeping compartment 
+ 
Berth, upper No. 1 
Berth, lower No. 6 
+ 
B . tuberculosis 
Floor main sleeping compartment 
+ 
Sputum exposed and injected into guinea pig; pig chloro- 
formed 77th day; increased 50 grams in weight; marked lesions 
of tuberculosis. 
Berth, upper No. 10 
+ 
Sputum exposed and injected into guinea pig; pig chloro- 
formed 77th day; increased 80 grams in weight; marked lesions 
of tuberculosis. 
No control pig inoculated. 
