59 
EXPERIMENT NO. 33. 
Generating lamp 
* Methyl alcohol, 1,000 c. c. 
Capacity of room, 2,000 cubic feet. 
Weather: Light southwest wind, clear. 
Tempera- 
ture. 
Relative 
humidity. 
Absolute 
humidity 
(grams per 
cubic foot). 
Before starting lamp 
° F. 
79 
Per cent. 
87 
9.23 
After 1 hour 
86 
88 
11.35 
After 2 hours 
85 
98 
12. 48 
After 3 hours 
84 
98 
12.11 
Time of exposure of organisms counted from time of starting the lamp. 
[ + means growth; — no growth.] 
Organism. 
B. pyocyaneus 
B. coli communis. 
B. dy senterise 
B. subtilis 
B. coli communis. 
B. subtilis 
How exposed. 
Filter paper 
do 
do 
do 
Wilson method . 
do 
Time of exposure in minutes, 
and results. 
10 
+ 
+ 
+ 
+ 
+ 
+ 
20 
+ 
+ 
+ 
+ 
+ 
+ 
30 
60 
+ 
+ 
90 
+ 
120 180 
EXPERIMENT NO. 34. 
Generating lamp. 
* Methyl alcohol, 1,000 c. c. 
Capacity of room, 2,000 cubic feet. 
Weather: No wind, cloudy. 
Tempera- 
ture. 
Relative 
humidity. 
Absolute 
humidity 
(grams per 
cubic foot). 
Before starting lamp 
° F. 
64 
Per cent. 
84 
5.51 
After 2 hours 
69 
94 
7.26 
After 3 hours 
67 
92 
6.66 
Time of exposure of organisms counted from time of starting the lamp. 
