15 
Trypanosome Diseases of Domestic Animals in. Uganda.* 
Ill.—Trypanosoma vivax (Ziemann). 
By Colonel Sir Davip Bruce, C.B., FRS. AMS.; Captains A. E. 
Hamerton, D.S.0., and H. R. Bateman, R.A.M.C.; and Captain 
F. P. Mackiz, .M.S. (Sleeping Sickness Commission of the Royal 
Society, Uganda, 1908-10.) 
(Received July 22, 1910.) 
[PLatEs 3—5. | 
Trypanosome of Pordage’s ox, 1903 (Sleeping Sickness Commission of 
Synonyms | the Royal Society, 1903). 
Trypanosoma cazalbour (souma). Laveran. 
INTRODUCTION. 
This interesting species of trypanosome appears to be widely distributed 
in Uganda. It was first discovered by the Commission in two cattle which 
came from Kavirondo, the district lying to the north-east of Victoria 
Nyanza. These oxen were driven to Kampala round the north end of the 
Lake, and probably became infected on the way. 
Then the Government Transport Department lost many of their oxen from 
this trypanosome. They were worked between Kampala, the native capital, 
and Luzira, the port on the Lake-shore, which hes about seven miles to the 
south-east. When the epidemic broke out these cattle were kraaled near 
the Lake-shore, along which they were allowed to graze, and where tsetse- 
flies are numerous. Afterwards, at the suggestion of the Commission, they 
were kraaled at Kampala, when the epidemic stopped, and no more deaths 
from Trypanosoma vivax occurred among them. 
Cases also occurred among the transport cattle belonging to the German 
Company, “ Victoria Nyanza Agentur.” These cattle were employed carrying 
goods between Lake Victoria and Lake Albert. 
Lastly, the Glossina palpalis on the Lake-shore near Mpumu, where the 
Sleeping Sickness Commission laboratory was placed, were found to be 
naturally infected with Zrypanosoma vivax, and this trypanosome was 
found in the blood of a bush-buck, shot at the same place at which the flies 
were collected. | 
* Continued from preceding article. 
