DR. MARTIN BARRY’S RESEARCHES IN EMBRYOLOGY. 
585 
Fig. 218. Cells (^V" to -£$'") from the germ in an ovum of 57y hours, and , from 
the Fallopian tube of the same Rabbit as the objects in figs. 214 to 
21/. 219. The central contained cells were larger than those in fig. 
21/, and between them were myriads of dark cells of immeasurable 
minuteness. 100 diam. (par. 357.) 
Fig. 219. A cell from a corresponding situation in another ovum of similar dimen- 
sions from the Fallopian tube of the same Rabbit. 100 diam. 
Fig. 220. A group of cells (the germ) in outline from an ovum of fifty-two hours, 
and measuring in diameter y " — . The ovum was taken from the same 
Rabbit as the ova in figs. 202. 203. 205 ; and like them had passed into 
the uterus. The cells represented in this figure were more numerous 
and smaller than those in fig. 215. They were globular in form, and 
of nearly equal size. 100 diam. 
Fig. 221 . Cells from the group in the preceding figure, represented on a larger scale. 
They contained elliptic cells, in no small degree transparent, between 
which were dark cells of extreme minuteness. 300 diam. (par. 357.) 
Fig. 222. Cells from a group presenting the same general appearance as those in 
fig. 220, and from an ovum found in the uterus of the same Rabbit. 
Their form was globular. One of them was seen to contain two elliptic 
cells, having essentially the same appearance as some of those which 
in the explanations of preceding figures have been represented as the 
destined successors of perfect cells (par. 353.). 300 diam. 
PLATE XXVII. 
All the Figures are from the Rabbit ( Lepus Cuniculus, Linn.). 
Fig. 223. Outline of cells grouped in a mulberry-like form (= the germ, ff) in 
the centre of an ovum of 57y hours, and of y ", found in the Fallopian 
tube between its middle and the uterus. (The objects in figs. 224 to 
228, as well as the ovum fig. 233, were taken from the same Rabbit.) 
These cells were more numerous and smaller (about eV") than those in 
fig. 215. They were globular in form. Within the group was seen an 
elliptic cell, which also is represented in the figure ; its length equal to 
twice the diameter of one of the surrounding cells. (The nucleus of this 
elliptic cell is the rudimental embryo. This nucleus has not been re- 
presented in the figure.) 100 diam. (par. 359.) 
Fig. 224. Outline of a group of cells constituting the germ in another ovum of 57y 
hours, and of y ", from the same Rabbit, and the same locality as the 
object in the preceding figure (see the explanation of the latter). 100 
diam. (par. 359.) 
4 F 
MDCCCXL. 
