G. H. F. Nuttall 
63 
Experiment III {Calf 19). 
Treatment: Tryposafrol, 0-25 rising to 1-5 grammes daily in 5 litres of sugared water as 
a drink on 11 successive days. 
Date 
Day 
Temp. °F. 
1913 
a.m. 
p.m. 
14. V. 
1 
lOM 
40 infected B. appendiculatus nymphs were placed on the 
101-2 
calf 
2 
101-4 
101-2 
3 
101-4 
101-2 
4 
100-8 
101 
5 
100-2 
100-4 
6 
100-6 
101 
7 
101-2 
101-2 
8 
101-4 
101-4 
9 
101-2 
101-2 
10 
101-1 
101-2 
11 
101-4 
101-2 
12 
101-2 
101-3 
13 
101-2 
101-4 
14 
101-3 
104-4 
Fever begins 
15 
105 
105-2 
16 
107 
107-2 
17 
104 
104-8 
18 
104-4 
Very few parasites found 
104-2 
Treatment 
19 
105 
105-2 
0-8%ofr.b. 
c. infected 
0-25 grammes of tryposafrol in drink 
20 
105-8 
105-6 
2-4 „ 
J J 
^ 99 99 99 99 
21 
105-6 
105-8 
6-0 „ 
99 99 99 99 
22 
105-2 
105-4 
15-6 „ 
99 
99 99 >9 99 
23 
105-6 
105-5 
16-8 „ 
99 
99 9 9 »» 99 
24 
103-4 
103-8 
32-0 „ 
99 
99 99 99 99 
25 
102-1 
102-4 
34-0 „ 
99 
1 
-*■*-' 99 99 99 99 
26 
102-4 
102-2 
41-2 
99 
1*5 99 99 99 99 
27 
104-4 
104-6 
51-2 „ 
99 
1*5 99 99 99 99 
28 
106-4 
106-2 
52-4 „ 
99 
1*5 99 99 99 99 
11. VI. 
29 
105-6 
57-2 
99 
1 
^ 99 99 99 99 
106-6 
Calf died at 6.35 p.m. 
9 . 
