NUCLEI AND KINETIC ELEMENTS 



117 



n.h~- 



- -n b. 



A B ■ C D 



Fig. 59. — Division of Spongomonas splcndida Hart, and Ch. The old flagcUa are 

 discarded and new ones form from the centrioles (C and D). (o.b.) old hlcpharo- 

 plasts; (n.b.) new blepharoplasts. (After Hartmann and Chagas.) 



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5 



*N 



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/ 



yy. 



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w 



Ml '* '-' 





O -if 



Fig. 60. — Nuclear division and budding in Heliozoa. A, Vegetative cell of Sphar- 

 astrum with axial filaments foeussed in a central granule (centroblepharoplast) ; 

 B, C, D, division of central granule and spindle formation in Acanthocystic aculeata, 

 E, F, formation of buds of same; G, exit of central granule from the nucleus of young 

 cells. (After Schaudinn.) 



