36 



Sir D. Bruce and others. Trypanosome 



Animals Susceptible to the Trypanosome causing Disease in Man in 

 Nyasaland. I. — The Human Strain. 



I. Strain I, 3fkanyanga. 



Table I. 



Date. 



No. of 

 expt. 



Source of virus. 



Period of Duration 

 incubation, of disease, 

 in days. in days.* 



Remarks. 



Cattle. 





13 



134 



9 





Goats. 





8 



33 



8 



19 



22 



27 



9 



55 



6 



25 



44 



45 



16 -2 



34-0 



1912. 

 Feb. 7. 



„ 7. 

 April 23. 



„ 23. 



167 

 168 

 473 

 474 



Feb. 7... 



142 



„ 7... 



144 



„ 7... 



146 



„ 7... 



149 



April 23... 



411 



„ 23... 



417 



„ 23... 



418 



Feb. 7... 



162 



„ 7... 



163 



„ 7... 



164 



April 23... 



475 



» 23... 



476 



„ 23... 



477 



1911. 





Dec. 21... 



12 



Nov. 16... 



3 



1912. 





Jan. 19... 



24 



Feb. 16... 



233 



„ 16... 



234 



April 23... 



469 



„ 23... 



470 



From Rat 36 



36 



373... 



From Rat 36 



„ 36 



„ 36 



„ 36 



From Guinea-pig 373... 



373... 

 373... 



Average 



From Rat 36 



„ 36 



„ 36 



From Guinea-pig 373... 



373... 

 373... 



Average 



12 I From Monkey 3 



3 I Mkanyanga . 



From Guinea-pig 13 . . 

 From Monkev 24 



» 



From Guinea-pig 373.. 



373.. 



Never showed fcrypanosomes. 

 Died of Strain I. 

 Never showed trypanosomes. 

 Still alive after 325 days. 



Died of Strain I. 



Never showed trypanosomes. 

 Died of Strain I. 



Sheep. 





2 



19 



2 



23 



2 



33 



9 



16 



9 



53 



13 



57 



6-2 



33 -5 



Baboon. 





Monkeys. 





14? 



35 



11? 



28 



3 | 



28 



3 * 



16 



13 



31 



6 



42 



6-2 



30 -0 



Died of Strain I. 



— Never showed trypanosomes. 



Died of Strain I. 



Average. 



* Duration includes the days of incubation ; it dates from day of infection. 



