1908.] 



A Trypanosoma from Zanzibar. 



21 



JMo. oi experiment. 



Source of 

 virus. 



Period of 

 incubation, 

 in days. 



Duration 

 of disease, 

 in days. 



Remarks. 



| 







Guinea-pigs. 





82 



Babbit 



25 





134 



Liver and; spleen enlarged 



110 



Eat 



12 





43 



„ greatly enlarged 



Ill 



)) 



19 





43 



)> )j 



1 9/1 



JJ 



21 







Old 11 £LU.VtJ dlWI .LkJiJ KlxlijO 





a 



21 





69 



1 lTTO>» or«n Q T\\ A ATI A n ll 1 T* Cf C\ 



1j1\L1 OJJ.U. OlJlCCtl t LilLLl i^L U. 





)) 



41 





65 



3) )J 



Dutton and Todd 





6 





30 





Thomas and Sreinl 



— 



4 to 15 





9 to 60 









White Eats. 





69 



Rabbit 



13 





30 



Typical post-mortem appearances 



83 





10 







Killed for cultivation experiments 



83a 



jj 



ii 







„ „ 



127 





7 





41 



Usual post-mortem appearances 



128 



a 



Bat ii 



7 





36 





88 



5 





20 



2nd passage through rat 



89 



„ ii 



5 







lolled for cultivation experiments 



106 



„ ii 



5 







107 



,, ii 



4 





14 



Typical post-mortem appearances 



108 



„ ii 



7 





35 



>! » 



109 



„ ii 



5 





28 



ii it 



102 



iii 



6 







Killed for cultivation experiments 



102a 



„ iii 



7 





37 



Usual post-mortem appearances 



121 



„ iii 



4 





37 



ii ii 



122 



„ iii 



5 





44 



ii ii 



1 OQ 



„ iii 



4 







xtat lost 



1 KQ 



i) iii 



7 





20 



Usual post-mortem appearances 





„ iii 



7 





23 



ii ii 



Uutton ana I oaa 





7 





36 





Thomas and Ifreinl 





4 to 7 





7 to 42 











Mice. 





132 



Eat 



10 





24 





134 



sj 



4 





11 





137 





10 





11 





Uutton and Todd 





5 





16 





Thomas and Breinl 





2 to 5 





16 to 23 













37 to 130 





Conclusion. — The results of these inoculation experiments with Dr. Edington's 

 trypanosome and Trypanosoma dimorphon show that they act on the various 

 animals employed in a strikingly similar manner. 



Cultivation of Dr. Edington's Trypanosome, Trypanosoma dimorphon, 

 and Trypanosoma congolense. 



In June, 1903, Novy and MacNeal first announced the successful cultiva- 

 tion of Trypanosoma lewisi. In the same year and in the following year they 

 also succeeded in cultivating Trypanosoma brucei and Trypanosoma evansi. 



