FIG. 159. 



FIG. 160. 





FIG. 161. FIG. 162. 



FIGS. 157-162. Various phases of the benign tertian parasite. 



FIG. 157. Several young ring-shaped amuebulse within the red corpuscles, one of 



the latter enlarged and showing a dotted appearance. Fig. 158. A larger amoebula 



Containing pigment granules. Fig. 159. Two large amoebulae, exemplifying the great 



variation in form. Fig. 160. Large amoebula assuming the spherical form and showing 



isolated fragments of chromatin preparatory to schizogony. Fig. 161. Schizont, 



which has produced eighteen merozoites, each of which contains a small collection 



of chromatin. Fig. 162. A number of merozoites which have just been sit free m 



the plasma, x 1000. 



