Fig. 40 

 Cat 2-cell egg with a second-cleavage spindle at telophase. X 700. 

 (Zenker; Heidenhain H and E). (E. C. Amoroso.) 



Fig. 41 



Cat 4-cell egg. X 700. (Zenker formol; Weigert H and E.) 



(E. C. Amoroso.) 



Facing page 78 



