160 Dr. H. L. Duke. [Feb. 26, 



Table IV. — Hippopotamus, etc. 













Microscopical 

 examination. 



Blood injection. 



Animal. 



. 



Date. 



]\o. 



Locality. 







Time 



Monkey. 





Goat, 













Eesulfc. 



No. of 



after 























films. 



death, of 

 animal. 



Quantity. 



Eesult. 



Quan 





Eesult, 

















hrs. 







c.c 







Hippo .. 



23.4.11 



. 17 





— 



2 



2 



3' 



— 



5 





— 







1 4.6.11 



106 



Nainusenyu . . . 



— 



2 



3 



2i 



— 



5 





— 







I 11.6.11 



132 



Kibanga 



— 



2 



2 



2* 



— 



5 





— 







10.9.11 



469 



Senkua Island 



— 



2 



3 



3 





10 











11.9.11 



470 



Lwagi Island... 



— 



2 



1 







10 





- 







19.9.11 



404 







2 



H 







6 











19.9.11 



471 



Senkua Island 





2 



4 



4 















20.9.11 



408 























24.9.11 



409 



Damba Island 





2 



31 



3 















24.9.11 



406 







2 



31 



3 















25.10.11 



498 



Kibanga 







H 



4 























2 



31 



3 











Buffalo 



4.5J1 



37 



Near Kyetume 





4 



11 



3 





5 











4.5.11 



38 







4 



H 



3 





5 











11.5.11 



49 





4 



4 



3 





5 











1.6.11 



99 



Near Kyetume 





4 



1 



21 





5 











29.6.11 



180 



Wankobe 





! 



1 



21 





5 











31.10.11 



499 







1* 



3 





6 







Wild pig 



1.4.11 



3 







2 



1 



3 





5 







Otter .. 



4.6.11 



109 



Nainusenyu ... 





4 



2 



21 





3 







Memarks. — Expt. 499 was shot far inland. Expts. 37, 38, 99, and 180 were shot on the borders of the 

 prohibited area. It is, however, probable that the herds, in the course of their wanderings, reach the lake shore 

 from time to time, so that they may be considered in the present discussion. All the other animals in Table IV 

 were shot along the lake edge. 



On numerous occasions trypanosomes have been studied in the blood 

 of Situtunga 173 and 356 (see Table V). These agree with T. uniforme 

 as regards morphology and movement. Eepeated attempts to subinoculate 

 from both these antelope into sheep and goats have, however, up to the 

 present failed. This failure to infect goats with the blood of game known 

 to contain trypanosomes morphologically identical with T. uniforme has 

 been already reported by Fraser and myself. 



Experiments on these two antelope conducted with laboratory-bred 

 G. palpalis show that only the proboscis is infected, the hypopharynx 

 invariably containing a small number of free trypanosomes. This is another 

 point of agreement with T. uniforme, which would thus appear the commonest 

 antelope trypanosome of the Mpumu neighbourhood. 



The organism referred to above as T. ingens in Experiment 173 has only 

 been observed in fresh preparations. It is a large trypanosome with a 

 constant, slow, rippling motion and a very wide undulating membrane. The 



