420 
The graph of the number of parasites of this animal is represented 
in Chart i. 
12 3 4 5 6 7 S 9 10 11 12 13 14 
95,ooo 
90,000 
55,000 
80,000 
75,000 
1 70,000 
65,000 
60,000 
55,000 
50,000 
45,000 
40,000 
35 ,ooo 
30,000 
■ 
f 
1 
1 
1 
1 -J 
I 1 
1 
— 
1 
1 
1 
1 
I 
1 
,/ 
25,000 
>s J 
\! 
20,000 
15,000 
10,000 
5,000 
1 
tuu 
1 
( hart i. — Graph showing Daily Counts of the Parasites per c.mm. in the Peripheral Blood cf 
a Rat inoculated with T. rbodcsicnse. Periodic Variation. 
The numbers of the parasites are indicated along the vertical line, and the duration of 
infection in days along the horizontal line. 
(See record of Rat r.) 
^ AT 2 -—White c?, weight 108 grams. Dose 350,000 Trypanosomes. (H.B.F.) 
Day 
1 
2 
I 
! 3 
4 
5 
6 
7 
Parasites per c.mm. 
_ 
68 
18,240 
44.120 
32,080 
22400 
Temp. 
32 
24 
20 
40 
56 
38 
Day 
8 
9 
10 
— 
- 
Parasites per c.mm. 
12,860 
126,000 
61,840 
_ 
- 
Temp. 
20 | 
25 
4 
1 
“ 1 
_ 
- 
