3M 
in fig. 19. A large or small vacuole is generally seen near the pointed 
end. One or two highly refractile dots occur in the cytoplasm. The 
movements are rapid and take place solely by the lashings of the 
flagellum, which acts as a tractellum. The cytoplasm does not take 
part m the production of locomotion even when the parasite has 
completely separated from its fellows. These small parasites have a 
herpetomonas-hke form ; this was especially so after division, when 
the body of the young parasite is drawn out and its width is almost 
equal throughout the whole length. No evidence of an undulating 
membrane was detected in these parasites; nor was the exact 
3 2.0. 
Fig. xql. 
termination of the flagellum in the cytoplasm ascertained in fresh 
preparations. In preparations examined thirty hours and forty-five 
nutes after they were made, the very active trypanosomes present 
of the shape shown in fig. 20. They contained two refractile 
n one preparation small free parasites were seen to divide 
ecoming rounded. They then divided longitudinally (fig. 21). 
u n f tle . same P re P ar ation examined thirty-two and a hi 
oms after it was made, agglutination* * of the small trypanoson, 
wer^t 1 nCar the edge of the dro P of blood. 6 The parasit. 
h ere attached together by their flagella (fig. 22 ). Their movemen, 
they were absolutely quiescent. Othc 
* ThiS P henomenon was seen uT^Td^T^Ti^'repanition of 
