ANIMAL TRYPANOSOMIASES IX THE ANGLO-EGYPTIAN SUDAN 



GERBILS 



49 



Kxperiment Number 



Duration of the disease 



Remarks 



21 days 



16 days 



8 days 

 15 days 

 lU days 



6 days 

 IG days 



9 days 

 12 days 

 34 days 



G days 



21 days 

 20 days 

 24 days 

 lU daj's 



22 days 



7 days 



17 days 



8 days 

 20 days 

 32 days 

 10 days 



23 days 

 S day> 



Enlarged spleeu 



Average duration of the disease iu gerbils = 15 days 



111 rabhitf experiment X 17 gives 39 days as the duration of the disease, baldness 

 and blepharitis being a feature of the malady. The conclusion arrived at here is that 

 in rabbits the disease is of a somewhat chronic type. 



In jerboas the disease is acute, killing the animals in about 7 days. 



Guinea-pig:' and rats are also susceptible to this type of trypanosome. 



3. Culture. This trypanosome has been cultivated repeatedly in these laboratories 

 by Mr. George Buchanan, whose notes on this subject will be found at the end of this 

 paper. In general it may be stated that it grows readily and is comparatively easy to 

 cultivate. 



4. Carrier. No laboratory experiments have been carried out liere. Gios.nua 

 inorsitans and a great variety of biting flies abound in the districts where it appears to 

 be endemic. At present we may perhaps regard G. mnrsifans as its carrier. 



