PLATE 7 



EXPLANATION OF FIGURES 



24 Culture Z, March 27, 1915. Exconjugant. Division of syncaryon. 



25 Culture Z, March 27, 1915. Exconjugant. Macronucleus show typical 

 ribbon formation. Micronuclear divisions preliminary to formation of macro- 

 nuclear anlagen. 



26 Culture Z, March 27, 1915. Exconjugant. Four macronuclear anlagen 

 and four micronuclei. 



27 Culture Z, April 4, 1915. Individual from the first division of exconjugant. 



28 Culture Z, April 5, 1915. Individual from the second division after conju- 

 gation. 



96 



