Strain o/T. brucei from Zululand. 513 



Table I — continued. 



Date. 



No. of 



Source of virus. 



Incubation, 



Duration 



Remarks. 





expt. 





in days. 



in days.* 







Guinea-pig. 







J?eD. o... 



1B4U 



Eabbit 1830 



31 





Died oi 2 . brucei. 



Q 



)J «... 



lo 1 !! 



„ 1830 



35 



ou 





,, a... 





„ 1830 







AT " -t. J 



JS ever snowed fcrvpanosomes. 



„ a... 



1843 



„ 1830 



21 



oy 



Died of T. brucei. 



„ 3... 



1844 



„ 1830 



14 



37 





„ 13... 



1895 



Pretoria strain 



— 



— 



Never showed trypanosomes. 



„ 13... 



1896 



Monkey 1970 



— 





Mar. 28... 



1842 



10 



27 



Reinjected; died of T. brucei. 



28 





1970 



20 



46 



)' 11 33 



28... 



1896 



1970 



20 



30 





May 13... 



2136 



1970 



— 





Never showed trypanosomes. 



29... 



2136 



1970 



4 



15 



Reinjected ; died of T. brucei. 



June 13... 



2225 



1970 



3 



34 



Died of T. brucei. 



July 16... 



2296 



Dog 2254 



47 



89 









Average 







20 -5 



43 -7 











Eat. 







jpeo. 



1 Q9Q 



lo^o 



Eabbit 1830 



g 



1 Q 



iy 



_ _ _ 

 Died oi 1 . brucei. 



o 



5) 



1 R9Q 



„ 1830 



6 



OO 



» ii 



O 



;j O... 



1 RQ9 



1830 



7 





)) >} 



Q 



1) «*-•• 



looo 



1830 



10 



lo 



13 33 



)) o. . . 



1 R3Q 



1830 





22 



11 33 



j, 1*»... 



1 Qfl9 



iyu^ 



1897 



17 



ol 



9 3 9 1 



Oft 





G-uinea-pig 1844 



8 



OQ 



11 11 



Mar. lo... 



iyyo 



Eat 1832 



5 



1 o 



11 31 



„ 10... 





„ 1832 



5 



i n 



lv 



31 11 



„ 15... 



iyyo 



„ 1832 



5 



OO 



11 31 



1 Q 



D iy... 



JUUo 



Monkey 1970 



5 



OA 



33 33 



April 4... 



ZUbo 



„ 1836 



7 



OA 



oU 



33 11 



„ 11... 





Eat 2065 



4 



1 "7 

 1 / 



13 31 



May 13... 



2135 



Monkey 1970 



6 



33 



JJ 5) 



„ 13... 



2137 



Goat 1889 



6 



18 



)' 13 



„ 13... 



2138 



„ 1889 



6 



17 



13 33 



,, 29... 



2196 



Eat 2135 



11 



26 





July 16... 



2288 



Dog 2254 



■'■i . 



33 



13 39 



16... 



2289 



„ 2254 



5 



44 



33 1 ' 



Sept. 2... 



2406 



„ 2361 



6 



24 



)) 39 



„ 16... 



2412 



Eat 2406 



6 



34 



33 33 



Oct. 20... 



2423 



„ 2412 



8 



39 



13 13 



Nov. 28... 



2442 



„ 2431 



4 



16 



31 31 







Average 



6-8 



27 -0 





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



Disease set up in Various Animals by T. brucei, Zululand Strain, 1913. 



Horse. — The Commission had no opportunity of studying this strain in the 

 horse, but Mr. Shilston states that one horse inoculated by him at Pieter- 

 maritzburg died in 35 days with typical symptoms of Nagana. 



Ox. — Six oxen were inoculated, but only two of these at any time showed 

 trypanosomes in their blood. One of these died after 310 days, while the 



