21 
Small squares of sponge were sterilized and soaked with a three-day 
bouillon culture of plague. The\’ were allowed to dry undei- the usual 
conditions in a Petri dish, as stated in the following tables: 
No. 26. — 1’lague Ccltuke ox Spoxge, 17° to 19° C. 
Time. 
Result. 
I 
Remarks. 
2 days 
-t- 
4 days 
-t- 
f> days . . 
+ 
8 days 
12 days 
+ 
Contaminated. 
14 days 
-t- 
21 days 
+ 
31 days 
43 days 
-1- 
Failed to kill a mouse: pieces of 
sponge yery dry. 
52 days 
63 days 
+ 
Failed to kill a mouse. 
74 days 
+ 
88 days 
4 - 
Failed to kill a mouse. 
98 days 
-t- 
125 days 
+ 
134 days 
- 
144 days 
]So. 27. — Plague Culture ox Spoxge, 22° to 29° C. 
Time. 
Result. 
Remarks. • j 
2 days 
-1- 
1 
4 days . 
+ 
i 
6 days 
+ 
1 
8 days 
4- 
Killed mouse in 9 days of plague. 
12 days 
-f 
14 days 
+ 
21 days 
-I- 
31 days 
+ 
43 days 
+ 
52 days .■ 
4 - 
('ontaminated. 
63 days 
+ 
Failed to kill mou.se. 
76 days 
— 
85 days 
_ 
95 days 
— 
No. 2S. — I’lague Culture ox Spoxge, 87° C. 
Time. 
Result. 
Remarks. 
2 days 
+ 
4 days 
— 
Contaminated. 
6 days 
- 
Do. 
8 days 
- 
Do. 
10 days 
- 
12 days 
- 
14 days 
- 
D(». 
21 <lays 
- 
Do 
