It m. 



The chromosomes are now orientated round a central space, in which is the developing 

 spindle, (d) Late metaphase, 43 minutes after (o). The spindle has turned through 

 a right-angle, and its axis is now parallel with the plane of the field, (e) Early anaphase. 

 44^ minutes after (a). The arms of the chromosomes trail behind their centromeres, 

 (f) 48 minutes after (a), (g) 61 minutes after (a). Cleavage in progress, (h) Telophase. 

 76 minutes after (o). One daughter nucleus in reconstruction. The chromosomes are 

 linked by cross-filaments. 



