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BOTANICAL GAZETTE 



Fig. 27— Third contraction complete; fibers have completely filled the 

 nuclear cavity. 



Fig. 28. — Multipolar spindle; chromosome aggregation loosening up. 



Fig. 29— Formation of the individual wefts of fibers for each chromosome; 

 the scattering of the bivalents upon the fibers; and a step farther in the transi- 

 tion from multipolar to bipolar spindle. 



Fig. 30. — A later stage. 



Jipolar spindle; bivalents stretched out upon the fibers. 

 >olar view of early metaphase. 



>olar view of metaphase with bivalents peripherally arranged. 

 Metaphase in which the individual wefts of fibers are extending 

 nosome to the pole; also the fibers' massive organization at the 



the longitudinal halves ( 



36.— Anaphase ; halves of the » 



chromosomes entirely separated, 

 somes approximating end to end 



-Late anaphase; 16 half chron 

 rem 2x chromosomes in length. 

 -Daughter nucleus after loosening up of chromo 

 -Daughter nucleus; irregular net appearance 



-Daughter nucleus; late spirem in which the outlir 



-Polar view of metaphase of homotypic mitosis. 

 -Late metaphase of the two daughter nuclei. 

 -Same, but only one daughter nucleus in plane. 

 -Anaphase of homotypic mitosis. 

 -Telophase of homotypic mitosis; end to end £ 

 tes just previous to organization of granddaughtf 



