6 Nebraska Agricultural Exp. Station , Research Bui. 21 
1921 Table 3. No. 1052 
Rabbit 
No. 
Injection of 
virus No. 620, 
Feb. 12, 
1/500 c.c. 
Dates 
of deaths 
Remarks 
1 
2 
3 
+ 
+ 
+ 
Feb. 14 
Feb. 14 
Feb. 14 
| Virus control (first injections) 
1921 
Table 
4. No. 1052 
Rabbit 
No. 
Injection of 
virus No. 620, 
Feb. 27, 
1/600 c.c. 
Dates 
of deaths 
Remarks 
1 
2 
+ 
+ 
Feb. 28 
Mch. 1 
j Virus control (second injections) 
1921 ■ Table 5. No. 1178 
Rab- 
bit 
No. 
Injection 
of serum 
No. 1178, 
April 11, 
c.c. 
Injection 
of virus 
No. 620, 
April 12, 
l/500c.c. 
Injection 
of virus 
No. 620, 
April 26, 
l/600c.c. 
Dates 
of 
deaths 
Remarks 
1 
15 
+ 
+ 
Apr. 27 
2 
15 
+ 
Apr. 19 
B. bipolaris swarming in blood. 
Pericarditis. Necrotic pneu- 
monia. Empyema. 
3 
15 
+ 
Apr. 17 
Severe pneumonia. Heart blood 
swarming with B. bipolaris. 
4 
15 
+ 
Apr. 20 
; Pneumonia. Heart blood swarm- 
ing with B. bipolaris. 
5 
10 
+ 
+ 
Apr. 30 
6 
10 
+ 

Apr. 18 
Few B. bipolaris in heart blood. 
7 
10 
+ 
+ 
Apr. 28 
8 
10 
+ 
Apr. 16 
Fibrinous pericarditis. Pneu- 
monia. Abscess in lung. Blood 
swarming with B. bipolaris. 
9 
5 
+ 
+ 
Apr. 27 
10 
5 
+ 
+ 
Apr. 27 
11 
5 
+ 
+ 
Apr. 28 
12 
5 
+ 
+ 
Apr. 28 
13 
— 
+ 
— 
Apr. 13 1 
Control 1st test. 
14 
— 
+ 
— 
Apr. 14 J 
Control 1st test. 
15 
— 
+ 
— 
Apr. 14 
Control 1st test. 
16 
— 
+ 
+ 
Apr. 28 i 
Control 1st test. 
17 
— 
— 
. + 
— 
Control 2nd test. Lives. 
18 1 
— 
— 
+ 1 
Apr. 28 1 
Control 2nd test. 
