478 
PLATE XLI 
Trypanosoma gambiense and Trypanosoma brucei 
Figs. 37-41, T. gambiense. 
Figs. 42-46, T. brucei. 
ig s - 37 - 38, 4 °. 4 1 . 4 2 > 43 * 45 > 4^, Breinl’s stain. 
Fig. 44, Heidenhain. 
^i§f- 37 - Trypanosome in the blood of a rat after treatment with 
atoxyl, showing rounding up of the cell body. 
Fig. 38 —Further stage in this process, flagellum is still attached. A 
slight modification of a membrane is apparent round the 
periphery of the cell. 
39—The same, flagellum not visible. 
Fig. 40. Later stage in the formation of the cyst. The membrane 
more apparent. 
Fig. 41—Trypanosomes killed by atoxyl in the blood 
' S 4 2 ' Trypanosoma brucei in resting condition, showing structure 
of the nucleus and relation of the schaumplasm. 
■g 43 . The same, showmg the division of the extra-nuclear 
centrosome. 
Figs. 44 to 46.—Later stages of division. 
