586 
DR. MARTIN BARRY’S RESEARCHES IN EMBRYOLOGY. 
Fig. 225. Cell in length) contained within the group exhibited in the pre- 
ceding figure. The interior having been very indistinctly seen, its pre- 
cise condition could not be ascertained. The appearance of the nucleus 
{bb), however, was such as the figure represents. This nucleus is the ru- 
dimental embryo. It had a finely granular appearance, and contained 
a pellucid central cavity. 100 diam. (par. 359.) 
Fig. 226. Cell with its nucleus ( bb ) — the latter being the rudimental embryo — as 
seen in a situation corresponding to that of the object in the preceding 
figure (par. 359.). It was also observed in an ovum of the same Rabbit ; 
the ovum being in a similar condition, and having the same size and 
local situation in the Fallopian tube. 100 diam. 
Fig. 227. Nucleus (rudimental embryo) of a cell such as that in the preceding 
figure, on a larger scale. It was elliptical in form (par. 359.). 300 
diam. 
Fig. 228. Appearance of a cell with its nucleus corresponding to the objects in the 
three preceding figures, and taken from another ovum of the same 
Rabbit. The nucleus (rudimental embryo) bb , was at the surface of its 
cell (par. 359.). The ovum was of like dimensions (y"), found in the 
same part of the Fallopian tube, and presented a similar condition. 
This figure does not represent particularly the interior of the cell, which 
could not be distinctly seen. 300 diam. 
Fig. 229. An ovum of 64^ hours, and of y ", found near the uterus in the Fallopian 
tube. The cells at the surface of the central group or germ ( bs ) were 
globular, or nearly so. Each of them presented a nucleus, which was 
not central but situated at the surface of the cell. These nuclei were 
yellowish-brown in colour, and appeared to consist of two parts ; a free 
portion, composed of the foundations of new cells, — and a more central 
portion having a finely granular appearance. Within the latter was a 
point, in some instances dark, in others presenting the appearance of a 
pellucid cavity (par. 358.). (A larger elliptic cell — corresponding to 
that in fig. 223 — was undoubtedly present, but could not be discerned.) 
100 diam. 
Fig. 230. An ovum of sixty-two hours, and of y ", found near the uterus in the Fal- 
lopian tube. The nuclei (of the cells in the group or germ, bs) appa- 
rently corresponding to the nuclei at the surface of the cells in the ovum 
of the preceding figure — had now passed into the interior. The outer- 
portion of each nucleus — presenting in fig. 229. merely the foundations 
of future cells — had expanded into cells which filled its vesicle ; the 
inner portion (of each nucleus) — finely granular in the ovum fig. 229. — 
was now seen to be composed of the foundations of new cells. The ap- 
pearance around the pellucid centre was that of a dark ring (par. 358.). 
