1912.] Antelope and their Relation to Trypanosomiasis. 161 



Table V— Situtunga. 









Microscopical 

 examination. 



Blood injection. 



Date. 



Expt. 

 No. 



Locality. 







Time of 



Monkey. 





Goat. 









No. of 



injection 

















Result. 



after 

 death of 

 animal. 



Quantity. 



Result. 



Quantity. 



Result, 



31.7.11 



173 



Kibanga 



T vniforme + 

 T. ingens + 





Tmme- 



Several 

 experi- 





SeTeral 

 experi- 





30 11 



551 





T. ingens + 



4 













10 8 11 



284 







6 













16.8.11 



302 







3 



3 hrs. 



3 c.c. 





8 













5 



1 hr. 



Sh „ 





6 





28.8.11 



332 







3 



lhr. 



3 „ 





8 





2.9.11 



356 





T. uniforme + 







4 „ 





Several 

 experi- 

 ments 





25.9.11 



402 



Damba Isle 





3 



2 hrs. 





T. garni. + 







25.9.11 



403 







3 



1 hr. 



: ;;} 







5.11.11 



509 







4' 



1 hr. 









T. vivax + 



6.11.11 



510 





T. vniforme + 

 fresh and 





1 hr. 



'=} 



T.gamb.+ 



PI 



T. uniforme + 

 T. gamb. + 









stained 













Remarks. — Situtunga Expts. 173 and 356 are still alive at the laboratory. 



T. ingens of Experiment 551 was seen in stained preparations and answered 

 to the description given by the 1908-10 Commission for this trypanosome. 



The reasons for the diagnosis of T. gambiense in the above table will be 

 given below. It may be mentioned that Situtunga 173 has developed 

 T. gambiense in its blood after being fed upon for five clays by flies infected 

 with this trypanosome. 



The obtaining of T. gambiense from Experiments 402-3 and 509-10 are, of 

 course, by far the most important result so far obtained during the examina- 

 tion of the lake-shore game. It is, therefore, necessary to consider fully all 

 possible sources of fallacy in these experiments and to exclude them as far as 

 possible. Upon this question Dr. Carpenter, at whose camp on Damba Island 

 I made my headquarters, has kindly expressed his views as follows : — 



The " Situtunga " Experiment. 

 " On considering this important result a possible source of fallacy at once 

 suggests itself, namely, that as the monkey was infected whilst on Damba 

 Island, the trypanosomes may have come from a glossina, for I have shown 

 in a ' Progress Eeport ' that the Glossinae on Damba Island are still capable 

 of infecting a monkey. 



VOL. LXXXV. B. M 



