73 
TABLE 8 
Experiments in a 24-liter bottle. 
Formalin-permanganate method. 
Formalin 1 c. c. and permanganate 0.5 gram. 
Moisture removed by calcium chloride. 
Varying quantities of moisture introduced. 
Ordinary summer temperatures. 
B. colt communis exposed on filter paper. 
[4- means growth; — no growth.] 
TABLE 9. 
Experiments in a 24-liter bottle. 
Formalin-permanganate method. 
Formalin 1 c. c. and permanganate 0.5 gram. 
Moisture removed by calcium chloride. 
Varying quantities of moisture introduced. 
Ordinary summer temperatures 
B. subtilis exposed on filter paper. 
[4- means growth; — no growth.] 
Tempera- 
ture at 
time of 
experi- 
ment. 
Quantity o 
jected a 
vapor. 
Absolute 
humidity, 
grains per 
cubic foot. 
f water in- 
s aqueous 
Relative 
humidity. 
Time of exposure in minutes, 
and results. 
5 
10 
15 
20 
30 
45 
60 
75 
90 
120 
75.0 
7. 43 
80 
+ 
4- 
4- 
83.0 
7. 21 
60 
+ 
+ 
+ 
4- 
79.0 
6.28 
59 
+ 
+ 
4- 
+ 
4- 
4- 
— 
— 
— 
— 
69.0 
4. 32 
56 
+ 
+ 
+ 
4- 
4- 
— 
— 
— 
— 
73.0 
4. 73 
54 
+ 
4- 
+ 
+ 
4- 
— 
— 
— 
— 
— 
88.0 
7. 54 
54 
+ 
4- 
4- 
4- 
-f- 
4- 
4- 
86.0 
6. 82 
52 
4- 
+ 
4- 
4- 
4- 
4- 
4- 
77.0 
5. 13 
52 
+ 
+ 
4- 
4- 
4- 
+ 
+ 
4- 
4- 
4- 
80.0 
5.43 
50 
+ 
+ 
+ 
4- 
4- 
4- 
4- 
86.0 
6.37 
49 
+ 
+ 
+ 
4- 
4- 
4- 
4- 
4- 
4- 
4- 
66.5 
3.5 
49 
4- 
+ 
4- 
4- 
+ 
4- 
4- 
4- 
4- 
4- 
78.0 
4.9 
48 
4- 
+ 
+ 
+ 
+ 
4- 
+ 
4- 
4- 
4- 
80.0 
5.0 
46 
+ 
+ 
4- 
+ 
4- 
+ 
4- 
4- 
4- 
4- 
84.0 
3.64 
30 
+ 
+ 
+ 
+ 
+ 
+ 
4- 
4- 
+ 
4- 
— 
