causing Disease in Man in Nyasaland. 

 Table II — continued. 



215 





Day 





Result. 





Date. 



of 



Procedure. 







Remarks. 





expt. 





Positive. 



Negative. 





May 1 



Z-i ] 



o 



zo 



o 



j) " 



Zo | 



,, 4 



27 ' 



28 [ 



>j «* 



„ 6 



29 



•7 



of | 



>> 8 



31J 



„ 9 



9 -> 



„ 10 



O Q T 



oo 



J! 1 ' 



<yA I 

 o4 > 



» 12 



35 J 



'„ 13 



36 



„ 14 



37^| 



„ 15 



38 ] 



„ 16 



39 ' 



40 f 



,. 17 



„ 18 



41 | 



„ 19 



42 J 



» 20 



43 



» 21 



44 | 



„ 22 



45 



» 23 



46 f 



,. 24 



47 J 



» 25 



48 



„ 26 



49"! 



„ 27 



50 | 



„ 28 



51 ! 



„ 29 



52 ! 



., 30 



53 I 



„ 31 



54 J 



Aug. 20 

 to 



Aug. 26 

 Aug. 21 

 Aug. 22 

 to 



Oct. 24 



8-65 



Experiment 2067 — continued. 



Fed on clean Dog 2054 ... 

 Starved. 



Fed on clean Monkey 2131 j 

 Starved. 



Fed on cle in Guinea- 

 pig 2145 



Starved. 



Fed on clean Duiker 2059 

 Starved. 



Fed on clean Monkev 2 1 84 



Experiment 2394. 



40 flies fed on infected 

 Rat 2389. 



Starved. 



Fed on clean Dog 2404 ... 



Trypanosomes appeared 

 in blood of Dog 2054 

 on the 31st day. 



Trypanosomes appeared 

 in blood of Monkey 

 2131 on the 42nd day. 



Trypanosomes appeared 

 in blood of Duiker 

 2059 on the 60th day. 



Trypanosomes appeared 

 in blood of Monkey 

 2184 on the 63rd day. 



All flies dissected and 

 three found infected. 



Trypanosomes appeared 

 in blood of Dog 2404 

 on the 65th day. No 

 flies dissected. 



Experiment 2067 was a successful experiment, as all the animals the flies 

 fed on became infected with the exception of the guinea-pig, and it will be 

 remembered that the guinea-pig was found to be refractory to this strain. 



Experiment 2394 also infected a dog, but as none of the flies were 

 dissected none were found infected. 



From these two experiments it would appear that a period of from 24 to 



