H. L. Duke 
369 
(c) Damba antelope strain , 1920. 
Table III. 
Animal 
and ex¬ 
periment 
number 
Origin of trypanosomes 
Duration 
of disease 
in days 
Remarks 
M 173 
Original antelope injection 
66 
Medium size: puffy eyelids 
M 171 
Inoculated from M 173 
38 
99 99 99 
M 197 
„ M 171 
38 
Large size: puffy eyelids 
M 227 
„ P 198 
81 
99 99 99 
M 122 
Cycle, lab.-breds off M 173 
44 
Medium size 
M 194 
„ „ M 173 
56 
Small size 
M 250 
„ „ M 227 
31 
Medium size: puffy eyelids 
M 219 
„ „ D 232 
42 
99 99 99 
M 275 
„ „ D 232 
78 
Medium size: female with young at breast. 
M 221 
„ „ M 227 
56 
Slight puffy eyelids 
Medium size 
P 198 
Inoculated from M 171 
47 
No obvious external symptoms 
P 231 
„ P 198 
36 
99 99 99 
D 232 
„ P 198 
25 
Corneal opacity late in disease 
D 273 
„ M 227 
25 
Corneal opacity early symptom 
D 295 
„ „ M 227 
18 
99 99 99 
D 296 
„ „ M 219 
21 
99 99 99 
R 176 
„ M 173 
34 
Facial oedema: purulent blepharitis 
R 177 
„ „ M 173 
37 
99 99 99 
R 199 
„ „ M 171 
28 
Facial oedema: purulent blepharitis; received 
R 200 
„ „ M 171 
42 
1-75 c.c. human serum half an hour before 
trypanosome injection 
Facial oedema: purulent blepharitis 
R 270 
„ „ M 227 
58 
Head oedema: blepharitis 
R 270 a 
„ „ M 227 
22 
Slight head oedema: no blepharitis 
S 283 
„ M 227 
45 
S 284 
„ M 227 
37 
S 285 
Infected by positive fly exp. 
61 
In monkeys the disease was characterised by puffiness of the upper and 
lower eyelids which was noticeable quite early in the disease. Emaciation 
was fairly rapid. No corneal changes were noted, but there was some photo¬ 
phobia. In no case were posterior-nuclear forms seen in the infected monkeys. 
The average duration for 10 completed monkey experiments was 53 days. 
In guinea-pigs there were no obvious symptoms; posterior-nuclear forms 
were common. Average duration 41 days. 
In dogs the disease was characterised by rapid emaciation and the early 
onset of cloudiness of the cornea, which led to complete blindness. Prolonged 
search in slides taken late in the disease revealed very rare posterior-nuclear 
forms in D 295. Average duration 22 days. 
In rabbits the usual symptoms of head oedema and blepharitis occurred: 
no posterior-nuclear forms were seen. Average duration 33 days. 
In sheep (three experiments) the average duration was 48 days. 
