•30 



A Trypanosome from Zanzibar. 



Conclusion. 



The conclusion arrived at is that Dr. Edington's trypanosome from Zanzibar 

 is probably Dutton and Todd's Trypanosoma dimorphon. One link in the 

 chain of evidence, however, is wanting, and that an important one — the 

 identity or non-identity of the carrier. 



DESCRIPTION OF PLATES. 

 Plate 1. 



This plate represents the shape and size of the three Trypanosomes, viz. : — > 



1. Dr. Edington's trypanosome. From blood of rat. 30th day of disease. Stained 



Giemsa. x 2000. See p. 27. 



2. Trypanosoma dimorphon. From blood of rat. 15th day of disease. Stained 



Giemsa. x 2000. See p. 29. 



3. Trypanosoma congolense. From blood of mouse. 7th day of disease. Stained 



Giemsa. x 2000. See p. 29. 



Plate 2. 



Fig. 1. — Part of an aggregation of Dr. Edington's trypanosoines after 5 days' growth. 



Stained Giemsa. x 2000. 

 Figs. 2-4. — Dr. Edington's trypanosome after 6 days' growth. Stained Giemsa. x 2000. 

 Figs. 5-14. — Cultural forms of Dr. Edington's trypanosome after 7 days' growth. Stained 



Leishman. x 2000. 



