588 
DR, MARTIN BARRY’S RESEARCHES IN EMBRYOLOGY. 
PLATE XXVIII. 
All the Figures except those in the upper line are from the Rabbit ( Lepus Cuniculus, 
Linn.). 
Figs. 235 to 243. are copies of delineations given by Schleiden of some of the 
earliest appearances presented by the vegetable germ-f (par. 399.400.). 
It will be seen that Schleiden’s “embryo” corresponds to that which 
in this memoir I have denominated the germ. 
Fig. 235. “Embryonal extremity of the pollen-tube of Linum pallescens together 
with an adherent portion of embryo-sac [a.]. The cell-forming process is 
incipient. At the upper part there is already a young cell with its cy- 
toblast; and below it are several loosely floating cell-germs.” 
Figs. 236. 23/. 238. 241. 242. “Formation of the embryo in Oenothera crassipes. 
u. Embryo-sac. (3. Pollen-tube. y. Embryo. S. Germinal shoots ( pane - 
turn vegetationis, Wolff.), s. Cotyledons.” 
Figs. 239. 240. “ Early conditions of the embryo of Potamogeton lucens .” 
Fig. 243. “A later stage from Potamog. heterophyllus. S. Plumula. s. Cotyledon 
still unclosed.” 
Fig. 245. Cells of the tunica granulosa (part of the “disc” of Baer) of the form 
which they assume after the fecundation of the ovum, — the largest as 
much as -gV" in length (par. 345.). a. One of these cells from a fecun- 
dated ovum still in the ovary. (3 , y. Several of these cells from ova 
which had passed into the Fallopian tube (par. 394.). (See also figs. 173. 
181. 195.) 300 diam. (par. 387.) 
Fig. 246. Cells of the retinacula ovi (part of the “ disc ” of Baer) as strewn around 
an ovum of twelve hours, from the Fallopian tube. They contained 
each an object having a vesicular appearance, with dark globules scat- 
tered on its surface. These cells of the retinacula, it will be observed, 
had not undergone the same change in form as those of the tunica 
granulosa (fig. 245.). 300 diam. 
Fig. 247- Cells of the retinacula ovi (part of the “disc” of Baer) as strewn around 
an ovum of seven hours, from the Fallopian tube. They each contained 
other cells, the number of the latter in some instances being only two 
(par. 394.). In some of these contained cells, the nucleus was situated 
at the surface of the cell. 300 diam . 
Fig. 248. Epithelium-cells from the fimbriated portion of the Fallopian tube of a 
Rabbit killed in the state of heat. They contained other cells, and 
one of them a central pellucid space, swo" 1 And upwards (par. 394.). 
f Fig. 235. is taken from Muller’s Archiv, 1838, Heft. II. Tab. III. fig. 17 ; and figs. 236 to 242, from 
Wiegmann’s Archiv, 1837, viertes Heft, Tab. VII. figs. 14. 15, figs. 6. 7. 16. 17, and fig. 8. 
