THE CELL AND CELL DIVISION 



47 



ous. Centrosomes omitted. C. Prophase; spireme segmented into chromo- 

 somes. Centrosomes commencing to diverge; spindle forming. D. Longi- 

 tudinal splitting of chromosomes. E. Disappearance of nuclear membrane; 

 continued divergence of Centrosomes and asters. F. Mesophase; formation of 

 equatorial plate. Polar view. Chromosomes V-shaped. G. Same in side view. 

 Only a few of the chromosomes are shown. H. Anaphase; daughter chromo- 

 somes diverging, still united at ends. /. Anaphase; continued divergence of 

 chromosomes, now entirely separated. J. Late anaphase; complete divergence 

 of chromosomes. Spindle breaking down, asters disappearing. K. Telo- 

 phase; beginning of reconstruction of daughter nuclei. Chromosomes disin- 

 tegrating. L Late telophase; division completed. Nuclei reconstructed; 

 centriole divided; cell walls completed. Nuclear membrane forming, c, cen- 

 trioles; cs, centrosphere; n, nucleus; s, spindle remains; sf, spindle fibers cut across. 



