NUCLEI AND KINETIC ELEMENTS 



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Fig. 31. — Division of Blepharisma wididans. Here the micronuclei are inside the 

 nuclear membrane of the macronucleus. (1) Normal vegetative individual; (2) 

 elongated cell and nuclear division; (3) details of oral structures and nuclei; (4 to 7) 

 stages in cell division; (8) relations of macro- and micronuclei; (9) young cell; (10 and 

 11) ex-conjugants; (12) second meiotic division during conjugation. (After Calkins.) 



