122 H. L. RATCLIFFE. 



PLATE 3. 



FIG. ii. Widening of anterior end continues. 



FIG. 12. Cell division begins. 



FIG. 13. Cell division at a late stage. 



FIG. 14. Reorganization. Cell division complete. Chromatin resumes 

 the vegetative appearance of paired strands of chromomeres. Endosome 

 buds off intranuclear body and the vacuole in the endosome reappears. 



