Fig. 42 

 Cat 8-cell egg; only six blastomeres are visible in this section. 

 X 700. (Zenker formol with acetic acid; Masson trichrome.) 

 (E. C. Amoroso.) 







Fig. 43 

 Cat morula. X 700. (Zenker formol with acetic acid and post- 

 osmication; Weigert haematoxylin. Fat droplets stained.) 

 (E. C. Amoroso.) 



