240 BOTANICAL GAZETTE [octToser 
Fig. 7. Similar to 7g. 5. The longitudinal lines probably chromatin which 
has not reached the equator, nucleolus at the left. This nucleus was crowded 
by a mass of others, hence its short form. 
Fie 8. Similar to fg. 7. Fibers visible toward the poles. This spindle 
was formed in one of the strands supporting the forming oogonium, and was 
consequently much elongated by tension. It is from the oogonium shown 
in fig. 62. 
FIG. 9. Chromosomes at the equator, spindle fibers very apparent at the 
poles, but not visible at the equator, nucleolus to left, membrane intact and 
inclosing the spindle. 
Fic. 10. From oogonium shown in fig. 60. Cross section of a spit 
dle, twelve chromosomes apparent (stained by haematoxylin from Flemming’s 
material), 
Fic. 11. Spindle mature, chromosomes closely grouped at the equator, 
centrosomes prominent, spindle brilliant and clear, nuclear membrane at 
ent but poorly stained (fig 73). 
Fic. 12. Chromosomes splitting, membrane _ visible with nucleolus 
enclosed, 
Fic. 13. Nucleolus large, nuclear membrane very definite, daughter 
chromosomes ready to separate. Only those in the highest focus aii gee 
several others being found at a deeper focus. The stain was particularly to 
show the membrane, and was not suitable for centrosomes. 
Fig. 14. Anaphase: chromosomes separating, nucleus lying about mid: 
way, centrosomes still visible, whole nucleus staining dark and membrane 
indistinguishable from spindle fibers. moe 
Fig. 15. Chromosomes nearing the poles, centrosomes not citing 
from them, nucleolus thidway, slight traces of spindle fibers stretching a 
the middle space, cytoplasm in the ends of the nucleus stains darker 
that of the central area. 
Fig. 16. Whole spindle elongated, chromosomes massing t08 
poles. ie 
Compare witt 
Fig. 17. Similar to fig, 76, but in a crowded position. 
7 
cheat 
- 
; the age 
Figs. 18 and 1g are from the periplasm of an oogonium of abou ; 
shown in fig. 67, slightly younger than shown in fig. 68. 
Fic. 18. Spindle fibers collapsing in the middle leadi 
ration of the daughter nuclei, the fibers constituting the or) 
brane of the daughter nucleus. ai 
§ ee chromo 
ng to the sepa" . 
gin of the men oa 
Fig. 19. A young daughter nucleus, nucleolus, membr 
somes. 
