47 2 BOTANICAL GAZETTE [December 



Figs. 3-5. — Division of body cell; X865. 



Fig. 6. — Central cell and two neck, cells; X510. 



Fig. 7. — Ventral canal cell and egg nucleus; X510. 



Figs. 8, 9. — Mitosis of nucleus of central cell; X865. 



Fig. 10. — An archegonium: egg nucleus, ventral canal cell with wall broken 

 and escaped nucleus in the cytoplasm of the egg; X85. 



Figs, ii, 12. — Nucleus of ventral canal cell escaping. 



Fig. 13. — Egg nucleus near a male nucleus; ventral canal cell nucleus, 

 and near by the other male nucleus and stalk nucleus. 



Fig. 14. — Detail of egg nucleus of fig. 10. 



Fig. 15. — Two archegonia, one showing fertilization of both egg and ventral 

 canal cell nucleus; X85. 



Fig. 16. — Divisions following the two fusions; X85. 



Fig. 17. — Ventral canal cell nucleus: a male nucleus and the stalk nucleus 

 in contact; X510. 



Fig. 18. — Fusion nucleus resulting from union of ventral canal cell nucleus 

 and male nucleus; X510. 



Fig. 19. — Egg nucleus and male nucleus in contact; X510. 



Fig. 20. — Egg and male nucleus in contact (see detail in fig. 19): the 

 ventral canal cell nucleus as described for fig. 18; X510. 



Fig. 21. — An archegonium showing the egg nucleus, ventral canal cell 

 nucleus, four male nuclei, a stalk nucleus, and two pollen tubes; X510. 



Fig. 22. — Postion and relation of ventral proembryo and proembryo 

 proper; X510. 



Figs. 23-26. — Detail of division following the fertilization of the ventral 

 canal cell nucleus; X865. 



Fig. 27. — Nucleus of the fertilized egg; X510. 



Fig. 28. — Nucleus of the fertilized egg: two groups of chromosomes; 

 X510. 



Figs. 29-33. — Pairing of chromosomes; X865. 



Figs. 34-40. — Segmentation of chromosomes; X865. 



Figs. 41, 42. — Paired segments; X865. 



Figs. 43-45. — Chromosome segments intermingling, still somewhat 

 paired; X865. 



Figs. 46-48. — Chromosomes starting to the poles; X865. 



Fig. 49. — Early telophase of first division; X865. 



Figs. 50, 52, 55. — Late telophase of first division; X865. 



Fig. 51. — Anaphase of first division; X865. 



Fig. 53. — Resting stage of nucleus from ventral proembryo; X865. 



Fig. 54. — Resting stage of nucleus of the proembryo; X865. 



