KARYOKINESIS. 



33 



Fig. XII. 



Fig. XI. 



Fig. XIII. 



Fig. X1V-. 



Fig. XV. 



Fig. XVI. 



Figs. XI-XVI.— Indkpendkkcb op the Germ Nuclei of Crepiduia.— Tlie dunl character of each nucleus 

 IS showu especially well in the telophase of each division. 



5 JOXTRN. A. N. S. PHILA., VOL. XII. 



