152 BOTANICAL GAZETTE [OCTOBER 
Fics. 28-41.—Fig. 28, embryo with segment divided by oblique wall; fig. 29, 
apical cell (of row of four), probably divided transversely; figs. 30-41, embryos show- 
ing varying features, figs. 36, 37, and 41 cut at plane perpendicular to median longi- 
tudinal plane; in fig. 36 division is going on at several different regions of embryo; 
dotted li t ts obli il ing d 
2 t q parating deeper cell (in process of division) 
from superficial cell with oil drop and undivided nucleus; figs. 34, 35, 37-39 show 
functional triangular apical cell; 430. 
