484 



Dr. H. L. Duke. On the Recovery of [July 17, 



Animal. 



iiipt. 



0. 



Source of virus. 



incubation 

 in days. 



Duration 



disease in 

 ays. 



Remarks. 







bitutunga 402 — 3 













„ 509 — 10 











504 



Flies from 401 



? 



195 







525 



Goat 512 



10 



207 





» 



543 



Calf 478 



10 





Still alive after 192 days. 













Active ; shows no marked 













symptoms. Slight wasting. 



» 



575 



Goat 579 



6 



46 



This monkey was an old one, 













and somewhat emaciated at 













commencement of experi- 



White rat.. 



477 



Monkey 401 



5 



83 



ment. 





571 



„ 401 





44 



A young rat. 





639 



511 





51 





640 



„ 511 



z 



52 





» 



646 



„ 401 





» 2 







647 



)> 401 





74 





Guinea-pig 



458 



1! 401 



in 









Eat 477 



20 









638 



Monkey 511 





80 





Goat 



512 



Situtunga 509—10 



15 (?) 





Has suffered from abscess on 











leg, from which it re- 













covered rapidly. Appa- 













rently in excellent health 













after 220 days. 



j 



579 



Monkey 401 







Presence of trypanosomes 













proved by subinoculation 













into monkey. Never seen 













in peripheral blood. Killed 













after 224 days, showing 













great weakness ; some ema- 













ciation. 













Extremely emaciated ; some 













opacity of cornea. Killed 













when at point of death. 





574 



Goat 512 



43 



In very poor condition at the 













time of inoculation and 















Calf 



478 



Monkey 401 



? 





Proved by subinoculation into 











monkey. Trypanosomes 













seen only once in peri- 













pheral blood. Apparently 













in excellent health after 













237 days. 



For comparison with the reactions of this Damba trypanosome the following 

 experiments may be considered, involving other trypanosomes strains 

 employed at Mpumu. 



Two types were selected for experiment, the one represented by various 

 strains recovered from wild Lake-shore flies by feeding them on monkeys ; the 

 other an undoubted T. gambiense. This last was obtained in Monkey 199 by 

 direct inoculation from a reedbuck in captivity at the laboratory, 15 months 

 after the original infection of this animal with a human strain. It should be 



