PROCEEDINGS. OF 
THE ROYAL SOCLETY. 
Szrorrion B.—BIoLoGicAaL SCIENCES. 
Trypanosome Diseases of Domestic Animals in Uganda.* 
IIl.—Trypanosoma brucei (Plimmer and Bradford). 
By Colonel Sir Davip Brucg, C.B., F.R.S., A.M.S. ; Captains A. E. HAMERTON, 
D.S.0.,and H. R. Bateman, R.A.M.C.; and Captain F. P. Macxig, IMS. 
(Sleeping Sickness Commission of the Royal Society, Uganda, 1908-10.) 
(Received July 15, 1910.) 
[PLatTEs 1 AND 2.] 
Synonym : “ Jinja trypanosome,” Sleeping Sickness Commission, Royal Society, 1903. 
INTRODUCTION. 
This species was only met with on one occasion during the work of the 
Commission in 1909. This was in the blood of an ox from the Mabira 
Rubber Estate (latitude 0° 30’ N., longitude 32° 55’ E.). The manager 
wrote that the animal came from the Bukedi District, about 100 miles to 
the north (latitude 1° 50’ N., longitude 32° 40’ E.). Not much is known of 
this district, as it has only recently come under administration, and 
therefore it is impossible to say whether the ox was infected in Bukedi or on 
the journey south. 
This is the species of trypanosome which was first discovered by Bruce, 
in 1894, in Zululand, to be the cause of Nagana, or tsetse-fly disease. 
During the work of the Sleeping Sickness Commission of the Royal Society 
in 1903, it was also met with in a herd of cattle from the same district of 
Bukedi, and then described as the “Jinja trypanosome.” + It is impossible 
to name with any certainty the trypanosome seen in 1903, which affected 
_ the horses, camels, and dogs of the Abyssinian Boundary Commission. This 
-~was described as the “ Abyssinian trypanosome.” Its morphology, as given 
* Continued from ‘ Roy. Soe. Proe.,’ B, 1910, vol. 82, -p. 479. 
Tt ‘ Reports of the Sleeping Sickness Commission of the Royal Society,’ No. VI, p. 112. 
VOL. LXXXIII.—B, ip 
