PLATE 5 



EXPLANATION OF FIGURES 



61 Section through trophozoite attached to lining of the urinary bladder. 

 X 525. 



62 Section through older trophozoite than in figure 61. X 525. 



64 Section through the base of an older trophozoite showing organs of attach- 

 ment more highly developed. 



65 Portion of a trophozoite from a dried smear showing vegetative and gen- 

 erative nuclei. Two of the generative nuclei are dividing mitotically. X 1400. 



66 Portion of section through trophozoite showing generative cells and 

 vegetative nuclei. 



68 Section through small part of trophozoite containing a gemmule with 

 only four nuclei. 



69 Section through gemmule containing eight nuclei only five of which are 

 shown. The cavity in which the gemmule lies can be distinctly seen. 



70 Section through gemmule at periphery of trophozoite and apparently 

 just ready to emerge. One nucleus is dividing mitotically. Only part of the 

 nuclei are shown. At one side the gemmule is shrunken away from the sur- 

 rounding endoplasm. 



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