PLATE 32 



A. — Longitudinal section of the embryo sac 12 hours after fertilization: end, endo- 

 sperm nuclei; e, egg in which one of the daughter nuclei has already divided; ant, 

 antipodals. X 520. 



B. — Longitudinal section of the embryo sac 36 hours after fertilization: end, endo- 

 sperm; emb, embryo; ant, antipodal tissue. X no. 



C. — Longitudinal section of the young embryo at the stage shown in B. X 800. 



