508 



Sir D. Bruce and others. Description of a 



Chart 9. — Curve representing the Distribution, by Percentages, in respect to Length, of 

 2000 Individuals of T. brucei, Zululand Strain, 1913, taken on nine consecutive 

 days from Eats 1829, 2006, 2288, and 2406. 



18 

 17 

 16 

 15 

 14 

 13 

 12 

 11 

 10 



s, 9 



S 8 



h 



i 6 



*■ 



4 



3 

 2 

 1 



Microns 



13 



14 



15 llBjl7 



1s|l9 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 131 



32 



33 



34 



35 













































































































f 



h 



v 



-V 











































4 





4 













































— 1 













































f- 

















































— 











































4 























































































































































































i 





































































































































































































































I-/ 























































































-a* 















































As Shilston's mule was in all probability infected from tbe wild game of 

 the Somkele district, in Zululand, it will be interesting to compare this curve 

 with that of the trypanosome causing disease in man, taken from the wild 

 game in Nyasaland. 



Chart 10. — Curve representing the Distribution, by Percentages, in respect to Length, of 

 2500 Individuals of the Trypanosome causing Disease in Man in Nyasaland, the 

 Wild-game Strain, taken on nine consecutive days from. Rats 847, 1220, 992, 849, 

 and 1022. 



□E 



18 

 17 

 16 

 15 

 14 

 13 

 12 

 11 

 10 



§, 9 

 2 8 



I 7 



o 6 

 * 5 

 4 



Microns 





f«| 



14|15 



16|17 



1819 



20|21 



22 |23|24l25 



26 



27 



28)29 130|31 



32 



33L34 



35 









































































































































































































































































































































































































































































































































































































































































































































































































































































































