478 
J. GRAY. 
Fig. 10. — Shows the formation of a vesicle from the reticuhmi of the 
nnclens. 
Fig. 11. — Proi)hase showing one large and one small vesicle. 
Fig. 12. — Metaphase showing hu-ge, \mpah-ed vesicle. 
Fig. 13. — Anaphase showing omission of the vesicle. 
Fig. 11. — Telophase with the vesicle appressed to one of the danghter- 
nnclei. 
Fig. 15. — Similar stage with omission of the vesicle, which has now 
contracted to a dark dot. 
Fig. 16.- — Two-celled stage showing omitted chromatin between the 
nnclei. [Magnification oc. 2, objective -^.] 
Fig. 17. — Tripolar anaphase showing omission of one vesicle and 
several chromosomes. 
Fig. 17 a. — Quadripolar figure showing a dispermic nnclens with one 
vesicle. 
Figs. 18-26. — Nuclear figures in eggs of E. escnlentns which had 
been treated with 50 c.c. sea-water + 7 c c. 24 M. NaCl for half 
an hour. 
Fig. 18. — Anaphase with chromosomes arranged irregularly on the 
spindle. 
Fig. 19. — Anaphase somewhat more irregxilar than fig. 18. 
Fig. 20. — Irregular prophase without trace of asters or spindle. 
PLATE 25. 
Figs. 21-33 a. 
Fig. 21.— Still more irregular anaphase : the centrosomes degenerated 
into irregular, darkly stained bodies, and the shapes of the chromo- 
somes mostly lost. 
Fig. 22. — The chromatic complex is represented by irregular masses 
of chromatin. 
Figs. 23 and 24. — Very irregular anaphases. 
Fig. 25. — Telophase with degenerated asters and centrosomes. 
Within one group of chromosome vesicles is a small irregular vesicle. 
Fig. 26. — Nucleus of a 2-cell stage with two minute vesicles. 
Figs. 27-30. — Nuclear figures in eggs of E. esculent us which 
had been treated with 50 c.c. sea-water + 8 c.c. 2g M. NaCl solution 
for half an hour. 
Fig. 31. — Egg of E. esculentus which was treated with 50 c.c. 
