332 WOOLFORD B. BAKER. 



being the means of adjustment to the width of the body. On the 

 other hand the bend may be the first indication of the plane of 

 separation of the daughter animals and brought about by the 

 metabolic changes in this plane (Fig. 12). 



(e) The Anaphase. During the anaphase the endosome con- 

 tinues to lengthen, accompanied by the nuclear membrane and 

 motor complex on the outside. The ends of the endosome 

 increase in size, perhaps at the expense of the mid-portion or 

 centrodesmose. This region becomes much attenuated and is 

 seen to lose its staining capacity for haematoxylin and to take the 

 eosin in its place. The nuclear membrane can be followed 

 distinctly between the groups of daughter chromosomes and 

 seems to inclose a plastin like spindle. Material counter stained 

 with light green does not show definite fibers in this spindle but 

 indicates, rather, protoplasm that has been drawn out under the 

 influence of the division forces. 



The opposite ends of the endosome are now seen to be quite 

 unlike in shape. One end is club shaped and rounded, as in the 

 preceding stages, while th^other is elongated anteriorly and 

 flattened on the outer side. A projection can be detected pointing 

 toward the granule on the periphery of the nucleus on that side 

 (Fig. n). In many figures a rhizoplast may be traced from the 

 granule to this projection. This marks the path of the budding 

 off of the original motor complex as observed in the early 

 prophase. 



The daughter chromosomes formed in the late metaphase or 

 early anaphase now pass toward opposite ends of the nucleus and 

 group themselves in a sort of barrel shaped cylinder around the 

 enlarged ends of the endosome. The ends of the endosome 

 project beyond the cylinder of chromosomes into a clear hyaline 

 area (Fig. n). The number of chromosomes seems to be equal 

 at both ends and can be counted with reasonable accuracy. A 

 number of counts from figures in end view disclose approximately 

 14 distinct chromatin rods. 



(/) The Telophase. The telophase begins after the endosome 

 has elongated until the thin mid-portion of the centrodesmose 

 becomes constricted. The nuclear membrane is likewise con- 

 stricted and the daughter nuclei begin to round up. Here some 



