FIG. 10. Diagrams illustrating the process of indirect cell division 

 or mitosis. 



A, the resting cell : the nucleus shows a nuclear membrane (nu. ,;/), 

 chromatin (chr) arranged in loops united into a network (the laiter 

 shown on the right side only), and two nucleoli (mi') : near the nucleus 

 is an astrosphere (j), containing a centrosome (c) and surrounded by 

 radiating protoplasmic filaments. ^ 



B, The chromatin has resolved itself into distinct loops or chromo- 

 somes (chr) which have divided longitudinally : the nuclear membrane 

 has begun to disappear : there are two astrospheres and between them 

 is seen the commencement of the nuclear spindle (sp). 



C, The nuclear membrane has disappeared : the chromosomes are 



