(i. H. F. Nuttall 
77 
Experiment XVI (Calf 20). 
Treatment: Potassium iodide in 25% solution, injected intravenously on 5 successive 
days, the dose rising from 20 to 40 c.c. 
Date 
Day 
Temp. *F. 
1913 
a.m. 
p.m. 
10. vm. 
1 
101-4 
24 infected R. appendiculatus 
nymphs (removed 
when 
101-4 
partly gorged from calf 21 on 10. vm. 1913) 
were 
2 
102-2 
101-6 
placed on the calf 
3 
102 
101-6 
4 
101 
101-4 
5 
101-6 
101-1 
6 
101-4 
101-8 
7 
101-6 
101-6 
8 
102 
102 
9 
101-4 
102-2 
10 
104-1 
104-2 
Fever begins 
11 
104-4 
104-6 
12 
105 
105 
13 
105-4 
105-4 
14 
105-3 
105-2 
15 
105-4 
105-2 
Treatment 
16 
107 
20 
c.c. of drug intravenously 
106-8 
17 
106-2 
106-4 
Very few parasites found 20 
C.C. ,, ,, 
18 
105-8 
106-8 
2-0 % of r.b.c. infected 40 
c.c. ,, ,, 
19 
105-8 
106-4 
7-6 „ „ „ 40 
c.c. ,, „ 
20 
105-4 
106-2 
12-4 „ „ „ 40 
c.c. ,, ,, 
21 
104-8 
105-4 
— 
31. vm. 
22 
104-6 
16-8 
J -' J fl 
Calf died at 11 a.m. 
