1909.] Sleeping Sickness in Uganda. 61 



Experiment 1462. — Ox. 



Date. 



No. of flies. 



Trypano- 

 somas. 



Malaria. 



■ 



Date. 



No. of flies. 



Trypano- 

 somes. 



Malaria. 



Put 

 on. 



Fed. 



Put 

 on. 



Fed. 



1909. 











1909. 











Aug. 16 



120 



75 







Aug. 20 



170 



80 







„ 17 



410 



250 







„ 24 



350 



120 







„ 19 



320 



180 







„ 26 







+ 





Retnarks. — Eesult positive. Infection August 19 ; 505 flies. 



Experiment 1465. — Ox. 



Date. 



No. of flies. 



Trypano- 

 somes. 



Malaria. 



j Date. 



No. of flies. 



Trypano- 

 somes. 



Malaria. 



Put 

 on. 



Fed. 



Put 

 on. 



Fed. 



1909. 











1909. 











Aug. 27 



150 



90 







Sep. 7 











„ 28 



60 



35 







9 



. 30 



19 







Sep. 4 



230 



170 







„ 10 







+ + 





Hemarks. — Eesult positive. Infection September 4 ; 295 flies. 



Experiment 982. — Ox. 



Date. 



No. of flies. 



Trypano- 

 somes. 







No. of flies. 



Trypano- 

 somes. 



Malaria. 



Put 

 on. 



Fed. 



Malaria. 



Date. 



Put 

 on. 



Fed. 



1909. 











1909. 











Sep. 11 



45 



36 







Sep. 20 











„ 12 



65 



50 







» 21 



115 



85 







„ 14 



110 



75 







» 22 



180 



145 







» 15 



125 



95 







23 



410 



380 







„ 16 



420 



160 







24 



300 



240 







„ 19 



55 



40 







„ 27 



370 



230 



+ + 





Remarks. — Result positive. Infection, September 19 ; 456 flies. 



