PLATE 1 



EXPLANATION OP FIGURES 



All figures on this plate from normally fertilized eggs. 

 1 Metaphase, first polar spindle. 

 2a and 2b Equatorial plates, first polar spindle. 

 3. Anaphase, first polar spindle. 



4 Telophase, first polar spindle. 



5 Completion of first maturation division. 



6 Metaphase, second polar spindle. 



7 Metaphase, second polar spindle. 



8 Equatorial plate, second polar spindle. 



9 Anaphase, second polar spindle. 

 Magnification, 2600 diameters. 



36 



