208 



Sir D. Bruce and others. Trypanosome 



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



Human Strain of the Trypanosome causing Disease in Man in Nyasalan'd. 





Goat. 



Monkey. 



Dog. 



White rat. 



Percentages 





















29 



20 



25 



21 



III. The Wild Glossina morsitans Strain. 

 Table VI. 









j Period of 



Duration 





Date. 



No. of 



Source of virus. 



incubation, 



of disease, 



Remarks. 



expt. 





in days. 



in days.* 











Cattle. 





1912. 













April 13... 



437 



Dog 325 



9 





Recovered. 



„ 13... 



438 



„ 325 



9 













Goat. 





Jan. 21... 



35 



Wild flies 



19 



35 



Died of wild fly strain. 



Feb. 1... 



117 



Monkey 20 



n 



50 



Also showed T. simise. 



„ 13... 



202 



Wild flies 



6 



24 



Died of wild fly strain. 



„ 17... 



201 



Dog 116 



12 



27 



31 'J 



„ 17... 



207 



„ 116 



9 



40 





April 13... 



421 



„ 325 



19 



130 



3 > '3 



„ 13... 



423 . 



„ 325 



9 



82 





„ 13... 



424 



„ oZb 



9 



9J 





May 15... 



416 



Wild flies 



5 



19 



Also showed T. simise and T. pecorum. 



June 12... 



637 



Rat 543 



29 



82 



Died of wild fly strain. 

 >) 



„ 12... 



638 



„ 543 



12 



46 



„ 12... 



639 



„ 543 



12 





Still alive after 224 days. 



„ 27... 



716 



Wild flies 



10 



60 



Died of wild fly strain. 



Oct. 31 ... 



1538 





8 



24 



Also showed T. pecorum and T. caprx. 



Nov. 23 .. 



lti26 





7 



56 



Died of wild fly strain. 



,, 27... 



1638 





15 



64 



Also allowed T. pecorum. 



Dec. 5... 



1667 





11 



80 



„ T. pecorum and T. caprss. 



„ 9... 



1676 





4 



40 



T. capras. 



„ 13... 



1685 





7 



38 



„ T. pecorum. 



1913. 













April 16... 



2081 



Eat 2020 



5 



41 



Died of wild fly strain. 



„ 16... 



2085 



„ 2020 



19 



32 





„ 16... 



2086 



„ 2020 



8 



32 



3) 33 



„ 16... 



2087 



„ 2020 



8 



39 





„ 16... 



2088 



„ 2020 



8 



44 









Average 



11 -8 



54 -3 











Pig. 





1912. 





1 









Nov. 25.. 



1636 



Wild flies 



14 



98 



Also showed T. simiae and T. pecorum. 



1913. 













Jan. 21.. 



1781 





6 



2 -tO 



T. pecorum. 



April 12.. 



2075 





11 



24 



„ T. simile. 



May 14.. 



2169 





8 



25 





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



