NUCLEI AND KINETIC ELEMENTS 



73 



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f^ 



Fig. 32.— Conjugation of Blepharisma undulans (continuation of Fig. 31). (13 to 

 16) interchange and fusion of gametic nuclei; (18 to 20) first division of the aniphi- 

 nucleus; (24, 25) origin of new macronucleus from progeny of the amphinucleus, the 

 micronuclei remaining in the macronuclei. (After Calkins.) 



