2l8 C. M. CHILD. 



PLATE XIII. 



FIG. 30. A-C, the formation of nuclei by fragmentation. 

 FIGS. 31-36. Nuclei and old nucleoli in the cytophores after fragmentation. 

 FIG. 37. Nuclei and old nucleolus after fragmentation with spireme stages ad- 

 joining. 



