11)12.] Antelope and their Relation to Trypanosomiasis. 165 



Finally, the following table may be considered as supplying additional 

 evidence on the part played by antelope as a trypauosome reservoir : — 



Table VI. 



Date. 



Expt. 

 No. 



No. of flies 



Result. 



Source of fly. 



Experimental 

 animal. 



1911. 



May 16—24 



July 24— Aug. 2... 

 Sept. 27— Oct. 4 ... 

 9—22 



58 

 223 

 400 

 384 



1100 j 

 1220 

 1560 | 

 4258 



T. gambiense + 

 T. uniforme + 

 T. uniforme + 

 T. uniforme + 

 T. vivax + 



} » 



Lwagi Island ... 



Goat. 



Remarks. — It will be seen from this table that in the first three experiments, comprising in all 

 3880 mainland flies caught at Buka Point, T. uniforme, with or without T. vivax, appeared on all 

 three occasions. A total of 4258 flies caught on Lwagi Island, where there are no antelope, but 

 only hippo, birds, and reptiles, failed to produce either of these trypanosomes. 



Diagnosis of the Trypanosome Obtained in Monkeys 401 and 511. 



There seems no reason to doubt that the trypanosome obtained in monkeys 

 from the blood of Situtunga 402-3 and 509-10 is identical with the species 

 obtained by Hammer ton and Bateman from wild Damba flies in May- June, 

 1910, and again in May, 1911, by Dr. Carpenter. The Damba natives 

 suffered severely during the epidemic, as the conditions on the island ensured 

 constant exposure to the bites of the fly. These fly are still infective to 

 monkeys, and the trypanosome carried by them answers to T. gambicnse 

 morphologically, and as regards the disease in monkeys. 



In the face of such facts a more comprehensive examination seemed hardly 

 necessary. In the present instance, however, the importance of the issue at 

 stake makes a careful investigation imperative. 



Of the trypanosomes previously described from Uganda T. brucei is the 

 only one which claims attention. Other species as T. peeaudi and 

 T. " dimorphon " are also suggested by the morphology. The fact that T. brucei 

 is supposed to be non-pathogenic to man emphasises the importance of 

 excluding this species in diagnosing a trypanosome derived from wild 

 antelope. 



Behaviour of the Damba Trypfuuisonie in Glossina palpalis. 



In an experiment comprising 101 clean laboratory-bred 67. palpalis fed 

 upon Monkey 401, whose blood contained the Damba trypanosome, two 

 infected flies were obtained on the 17th and 57th clays respectively. 



The clean monkey upon which they were fed developed trypanosomes 

 answering to T. gambiense. The 57th day fly showed a typical T. gambiense 



