W. L. Yakimoff and others 39 
Table 5. 
Host 
Total 
length 
Length 
without 
flagellum 
Width 
From pos¬ 
terior end 
to blepha- 
roplast 
From ble- 
pharoplast 
to nucleus 
Length 
of 
nucleus 
From nu¬ 
cleus to 
anterior 
end 
Length of 
free por¬ 
tion of 
flagellum 
r23-14 
15-76 
2-13 
2-13 
5-96 
2-62 
4-47 
7-38 
Mouse \ 
23-10 
16-43 
2-84 
2-20 
6-03 
2-84 
4-97 
6-67 
\ 
123-70 
16-46 
2-69 
1-84 
6-03 
2-76 
5-46 
7-24 
Rat 
22-07 
15-89 
2-55 
1-91 
9-24 
2-84 
4-54 
6-17 
Guinea-pig 
24-84 
16-18 
2-41 
2-20 
6-31 
2-76 
4-54 
8-66 
Rabbit 
22-76 
16-11 
2-27 
2-13 
6-03 
2-69 
4-89 
6-49 
Dog 
22-39 
15-01 
2-13 
2-20 
5-11 
2-62 
4-68 
7-68 
Calf 
22-46 
16-22 
2-34 
1-63 
5-60 
2-91 
5-53 
6-24 
Horse -| 
[ 22-46 
16-64 
2-34 
1-56 
5-82 
2-41 
6-31 
6-82 
L 21-97 
13-87 
2-05 
1-49 
5-18 
2-34 
4-33 
8-09 
Pig 
23-35 
18-17 
1-70 
2-34 
5-75 
2-91 
6-67 
5-18 
The results in Table 4 show that the greatest divergence, 18*46/x and 
28-75 pi, occurs in the same animal, the pig. 
The average dimensions show very little differences. Even in the same 
animal, a horse, the average length was 21*97/x one day and 22*46/x the next. 
Excluding the former of these two measurements, the maximum difference 
in length between the trypanosomes from any two experimental animals is 
only 2*77/x, that of the rat being 22*07/x, and of the guinea-pig 24*84/x. These 
measurements are almost identical with those of trypanosomes from the 
blood of their natural host, and it may be stated that the average dimensions 
of the trypanosomes from experimental animals compared with each other, 
and also with those from naturally infected camels, show no appreciable 
differences. 
(c) Comparison of the dimensions of the Turkestan camel trypanosome 
with those of other pathogenic trypanosomes. 
The two following tables (6 and 7) give the dimensions, actual and average, 
of various species of trypanosomes in both mice and guinea-pigs. 
• 
In mice 
T. brucei 
Total length 
17 04-25-20 
Table 6. 
Length with¬ 
out flagellum 
14-20-19-52 
Width 
213-4-26 
Length of 
nucleus 
2-13-3-55 
Length of 
free portion 
of flagellum 
2-84-5-68 
equiperdum (Russian) 
17-75-24-49 
1313-1917 
2-13-3-55 
2-13-2-84 
2-84-7-10 
„ (French) 
18-46-22-72 
13-49-17-04 
2-84-2-84 
1-42-2-84 
4-26-5-68 
togolense 
17 04-23-43 
12-78-17-75 
2-84-3-55 
1-42-2-84 
4-26-8-52 
gambiense 
19-52-22-72 
13-84-17-75 
1-42-2-84 
1-42-2-84 
4-26-7-10 
hippicum 
16-68-23-78 
12-42-1810 
213-3-55 
213-4-26 
4-26-5-68 
In guinea-pigs 
T. evansi 
20-94-23-78 
14-55-1810 
213-2-84 
2-84-2-84 
4-26-7-10 
equinum 
18-46-25-56 
14-20-19-88 
2-13-2-84 
2-84-2-84 
2-84-8-52 
soudanense 
18-81-23-78 
11-00-1810 
2-13-2-84 
1-42-2-84 
4-26-8-52 
