Pl.\te VI 

 All figures are from sections 



Fig. 55 Undivided egg containing multiple asters and spindles; the separate asters near the peri- 

 phery are probably cytasters, some of which show centrioles. 



Fig. 56 Single, large nucleus containing numerous chromosomes, which have probably been gathered 

 together after a multipolar mitosis. 



Fig- 57 Undivided egg containing multiple nuclei, which have probably arisen through multipolar 

 mitoses. 



Fig. 58 Abnormal embryo, showing one large cell with multiple spindles and asters. 



Fig. 59 Abnormal embryo, showing two giant spindles and their multiple chromosomes. 



Fig. 60. Monaster in undivided egg; numerous chromosomes are present in the central, clear area, 

 ■while a few are scattered among the rays. 



Fig. 61 Monaster in unsegmented egg; the chromosomes in the central area are dividing or have 

 divided, while one lying outside is also in the act of dividing. 



Fig. 62 Monaster in unsegmented egg; this is probably a prophase of a period of activity which will 

 culminate in another division of the chromosomes. 



