the Domestic Animals in Nyasaland. 



57 



Table IV. — The Average Duration of Life in Various Animals infected by 

 T. simice, Nyasaland. Mixed infections are not included. The duration 

 includes the days of incubation : it dates from the date of infection. 

 The letter 11 stands for refractory. 





Ox. 



Antelope. 



Goat 

 and 

 sheep. 



Pig. 



Baboon. 



Monkey. 



Dog. 



Eabbit. 



Guinea- 

 pig- 



Eat. 



Average dura- 

 tion in days 



B 



E 



46-6 



5-3 



E 



10 "8 



E 



E 



E 



E 



No. of animals 

 employed 





5 





9 



3 



• 



24 



21 



10 





5 



Table V. — The Percentages of Eecoveries in Various Animals from T. si mice 

 infection. This table includes mixed infections. 





Ox. 



Antelope. 



Goat 

 and 

 sheep. 



Pig- 



Baboon. 



Monkey. 



Dog. 



Eabbit. 



Guinea- 

 pig- 



Eat, 



Percentages ... 



E 



E 



37 5 



o-o 



E 



14-3 



E 



E 



E 



E 



No. of animals 

 employed 



4 



5 



32 



13 



3 



35 



21 



10 



5 



5 



The Carrier of T. simle, Nyasaland. 



In Nyasaland the carrier of T. simice is G. morsitans, of which 3 - 4 per 1000 

 were found to be infected. A paper on the development of T. simice in 

 G. morsitans is in course of preparation. 



The Host, or Reservoir, of T. simle. 



The warthog. — Thirty-three of these animals were examined, and T. simice 

 found in three. 



Conclusions. 



1. T. simice belongs to the same group as T. pecorum, and, like the latter 

 is erratic in its action on animals. 



2. T. simice affects goats, sheep, pigs, and monkeys. Oxen, antelope, dogs, 

 rabbits, guinea-pigs, and rats are practically immune. 



3. The carrier is G. morsitans. 



4. The reservoir of the virus is the warthog. 



