FIG. 180. 



FIG. 181. 



FIG. 182. 



FIG. 184. FIG. 185. 



FIGS. 180-185. Exemplifying phases of the malignant parasite. 



FIG. 180. Two small ring-shaped amoebulae within the red corpuscles. Fig. 181. A 

 " crescent " or gamete showing the envelope of the red corpuscles ; also an amccbula. 

 Figs. 182-185 illustrate the changes in form undergone by the crescents outside the 

 bod}\ In the interior of the spherical form in Fig. 184 evidence of the flagella can be 

 seen. Fig. 185. A male gametocyte which has undergone exflagellation, showing the 

 thread-like microgametes or spermatozoa attached at the periphery, x 1000. (The 

 figures in this plate are from preparations kindly lent by Sir Patrick Manson.) 



