348 BOTANICAL GAZETTE [NOVEMBER 
Fic. 23.—A later stage in fertilization. 3000 
Fic. 24.—F using nuclei with cytoplasmic sheath 1850. 
Fic. 25.—Second division of proembryo. X30 
Fic. 26.—Four-nucleate stage of proembryo; a other four nuclei degenerat- 
ing. Os ie 
G. 27. pasion through thick integument showing inner fleshy ae the 
row of heavy-walled cells (containing crystals) which becomes the stony layer, 
and the outer fleshy layer of two rows of cells. 1850. 
PLATE XXII 
Fic. 28.—Basal end of egg, showing egg nucleus, pollen tube with two male 
nuclei and one other nucleus, and food vacuoles. 1850. 
Fic. 28b.—The archegonium of /ig. 28, showing position of egg nucleus and 
pollen tube in the egg. 100 
Fic. 29.—Basal end of aoheye sac, showing four nuclei of the proembryo, 
remains of the pollen tube, and the non-functional male cell. 1850. 
Fic. 29b.—Same as fig. 29, showing whole length of embryo sac. X 100. 
Fic. 30.—Eight free nuclei of proembryo in basal end of sac, with pollen tube 
above containing normal contents. 1850. 
Fic. 30b.—Same as fig. 30, showing top of embryo sac. 100 
Fic. 31.—Female ey, showing miner by pollen tube; the 
pollen tube is entering the egg from the side. X 100 
Fic, 31b.—Same as fig. 31. X18 
Fic. 32.—This figure shows Pag oe path usually made by the po llen 
tubes through the nucellus to the archegonia. X 
Fic. 32b.—Same as fig. 32, showing the two srohabie neck cells; 
structure of the chromatin of the egg nucleus intimates that it may form a ven 
nucleus; body cell not yet divided. 1850. 
Fic. 33.—Long suspensor, with embryo buried deep in the female game- 
tophyte. X 100. 
the loose 
tral 
