Strain of T. brucei from Zululand. 515 



Table II. — The Average Duration, in Days, of the Disease in Various Animals 

 caused by T. brucei, Zululand Strain, 1913. 





Horse. 



Ox. 



Goat. 



Monkey. 



Dog. 



Rabbit. 



Guinea-pig. 



White rat. 



Average duration, 

 in days 



38 



310 



77 



29 



18 



33 



44 



27 



Number of animals 

 employed 



3 



1 



7 



8 



17 



8 



10 



23 



Compare this with the following table : — 



Table III. — The Average Duration of Life, in Days, of Various Animals 

 Infected with the Human Strain of the Trypanosome causing Disease in 

 Man in Nyasaland. 





Horse. 



Ox. 



Goat and 

 sheep. 



Monkey. 



Dog. 



Rabbit. 



Guinea- 

 pig- 



White rat. 



Average duration, 

 in days 







131 



42 



26 



34 



28 



67 



30 



Number of animals 

 employed 







1 



29 



20 



25 



7 



15 



2L 



Table IV. — The Percentages of Eecoveries in Various Animals Infected with 

 T. brucei, Zululand Strain, 1913. 





Horse J 



1 



Ox. 



Goat. 



Monkey. 



Dog. 



Rabbit. 



GuiDea-pig. 



White rat 



Percentages 







83 



























Number of animals 



3 



6 



4 



8 



17 



8 



10 



23 



employed 



















Compare this with the following table : — ■ 



Table V. — The Percentages of Eecoveries in Various Animals Infected with 

 the Trypanosome causing Disease in Man in Nyasaland. 



t 



' Horse. 



1 



Ox. 



Goat and 

 sheep. 



Monkey. 



Dog. 



Rabbit. 



Guinea- 

 pig- 



White rat. 









80 



























Number of animals 







5 



29 



20 



25 



7 



15 



21 



employed 



















