.368 
Mammalian Trypanosomes of Africa 
species somnolence was a much more pronounced symptom, and commenced 
earlier in the disease. Unless otherwise stated all the monkeys quoted in these 
tables are the black-faced green-coated Cercojnthecus sp. The sheep were the 
local native fat-tailed variety. 
The average duration in two dogs was 35 days. 
Table 11. Wild-fly strain , Damba Island. 
Animal 
and ex¬ 
periment 
number 
Strain of trypanosome 
Duration 
of disease 
in days 
Remarks 
M 207 
Damba Hies direct 
30 
No facial oedemas 
M 208 
99 99 
133 
,, „ emaciation marked 
M 209 
99 99 
92 
99 99 
M 272 
Inoculated from 207 
82 
Emaciated. For 10 days of the disease 
showed cloudiness of both corneae 
which advanced to total blindness 
and then slowly cleared again. This 
symptom never before noted in 
Uganda 
P 240 
Inoculated from 207 
56 
Posterior-nuclear forms seen 
P 241 
99 99 
Alive after 
158 
99 99 
Average duration of disease in four completed monkey experiments was 
84 days. 
(b) Examination of situtunga (Tragelaphus spekei) on the Sesse Islands. 
In November 1919 defibrinated blood of 12 situtunga was inoculated into 
clean monkeys without any trypanosomes being recovered. The animals were 
shot mostly on Bugalla Island, the largest of the Sesse group, where the 
clearing of the fly-shore brought about by the feeding of innumerable antelope 
is most marked. Slides from one of these animals showed T. vivax. None 
of these antelope was shot on Damba. 
In September 1920 two monkeys were inoculated, each with the citrated 
or defibrinated blood of six situtunga shot on Damba Island. Of these five 
were young animals. One of the monkeys remained negative to daily ex¬ 
amination for six weeks. The other, nine days after the first inoculation, 
showed in its blood the polymorphic trypanosome which is referred to 
throughout this paper as the 1920 antelope strain. 
The reactions of this antelope strain will now be discussed. 
