578 
MONTGOMERY. 
EXPLANATION OF PLATE XXVIII. 
Figs. 24Q-281: Egg development of Polydora. 
Fig. 249. Nuclear division in a peritoneal cell (alcohol, sol. sublimate; Ehrl. 
haematoxylin, 1 hr.; eosin, 5 min.). 
Figs. 250-254. Free cells of the body cavity (as in 249). 
Fig. 255. Nuclear mitosis (as in 249). 
Figs. 256-259. Mitoses of genital cells (as in 249). 
Fig. 260. Nuclear mitosis (as in 249). 
Figs. 261-266. Immature ova (as in 249). 
Figs. 267 and 268. Germinal vesicles (as in 249). 
Fig. 269. Ovum, only a portion of the cytoplasm drawn (as in 249). 
Figs. 270 and 271. Ova (aq. sol. sublimate with 5% acetic acid ; Ehrlich-Biondi 
stain, 3 hrs.). 
Figs. 272-275. Germinal vesicles (as in 270). 
Figs. 276 and 277. Idem (Perenyi’s fluid, 1 hr.; Ehrlich-Biondi stain, 2^ hrs.). 
Fig. 278. Ovum, only a portion of the cytoplasm drawn (Flemming’s fluid; 
safranin, 70 hrs.; gentian violet, 2 % hrs.; orange G, 2 min.). 
Figs. 279-281. Germinal vesicles (as in 278). 
Figs. 282-2qq: Egg development of Tetrastemma elegans. 
Figs. 282-291. Germinal vesicles (alcohol, sol. sublimate; Del. haematoxy¬ 
lin, 25 min. ; eosin, 5 min.). 
Fig. 292. Ova (Hermann’s fluid; Del. haematoxylin,45 min. ; eosin, 5 min.). 
Figs. 293-299. Germinal vesicles (as in 292). 
