8 



Figs. 6-9. — Four stages of cell division in Euglena spirogyra; chromosomes and nuclear 

 division not shown. Fig. 6, intranuclear body which forms the blepharoplasts has moved to 

 anterior end of nucleus and divided. Fig. 7, two blepharoplasts, resulting from a second division 

 of the intranuclear bodies, have reached the base of the reservoir, where the flagellum arises; 

 new axial fibers have developed from them and united with the old, and the flagellum has 

 divided. Figs. 8 and 9, later stages, showing progress of division of cell body from anterior 

 end (after Ratcliffe, 1927). 



