PLATE 6 



EXPLANATION OF FIGURES 



67 Section through small portion of trojihozoitc showing ;i number of genera- 

 tive cells, two gemmules and one vegetative nucleus. 



71 Portion of trophozoite showing a number of gemmules. Drawn from a 

 dried smear stained by Giemsa's method. X 1400. 



72 and 73 Gemmules which have recently emerged from the mother tropho- 

 zoite. Note that four of the nuclei are becoming enlarged to form vegetative 

 nuclei. 



74 Section through gemmule which has been retained in the mother tropho- 

 zoite longer than usual. The nuclei are already differentiated into vegetative 

 and generative nuclei, the latter being inclosed in distinct cells. 



75 Similar to figure 74 except that the gemmule is in a somewhat later stage 

 of development. 



76 Portion of trophozoite showing several pansporoblasts. All the nuclei 

 are inclosed in distinct cells. Only part of the cells are shown. 



374 



