ON CARYOKINESIS. 



IS3 



came into existence exactly at the moment when the 

 single equatorial "plate" was dividing into two par- 

 allel daughter "plates," the following view becomes pro- 

 bable, viz. that after the archoplasmic filaments from the 

 two centres have reduced the chromatic contents of the 



A--- 



Fig. 5. 



nucleus into a flat "plate" by gradual lengthening, they 

 continue to grow in the same manner, and push through 

 between each other, just as two brushes would do if 

 their ends were pushed together. Their free ends will 

 dovetail with each other. The distal extremity of each 

 archoplasmic filament being fastened to the chromosome, 



