266 
DR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
part circumscribed by a dotted line ; the latter part being continued 
from the orifice (y y,) to the centre of the object y, and brought into 
view by depressing the instrument. L A larger object, being either an 
advanced state of f3 and y, or else containing several objects such as these. 
£ Seemed to be composed of discs, among which were seen some with 
caudal appendages, — probably spermatozoa. & Was circumscribed by 
a membrane. (Acetic acid.) 
Fig. 162. Stone-chat. Objects from the testis; namely, a, altered corpuscles 
having the same appearance as corpuscles of the blood, — and (3, y, por- 
tions of spermatozoa, forming out of such altered corpuscles. Red co- 
louring matter visible in all. The corpuscles composed of discs. (3 . Part 
of two spermatozoa, in the course of formation out of discs, y. Discs 
which appeared to have coalesced at their extremities and sides. At 
the upper part, and on the left side, of this object, is seen a partially 
formed spermatozoon. It would thus seem that the spermatozoa are 
here formed by division of the discs ; and this mode of origin is no doubt 
connected with their spiral form. h. Portion of a spermatozoon com- 
pletely formed. 
Fig. 163. From the testis of the same Bird, after a night’s maceration in water. 
a. The large corkscrew-like extremity of a spermatozoon. (3. Outline 
of two similar objects, the position of which, in relation to each other, 
was such as to suggest the idea that the division of the discs, for the 
formation of the spermatozoa, was either incomplete, or so recent that 
the spermatozoa were still imperfect ; and that their position had not 
changed. The objects in this figure were blood-red. 
In the figures of the ovum (figs. 164 to 173.) the letter c denotes the germinal 
vesicle, g the discs of the ovisac, and h the membrane of the ovisac-f-. 
Fig. 164 . Wryneck (. Yunx Torquilla, Linn.). Corpuscle having the same appear- 
ance as a blood-corpuscle, very much enlarged, and filled with young 
corpuscles. Each of these young corpuscles is an ovum (including 
the ovisac) in a rudimental form. These objects are for the most 
part in outline; but three of them are in a more finished state. 
g. Discs, into which a portion of the young corpuscle has divided. In 
some parts these discs were quite red ; in others pale. c. Germinal 
vesicle, in the situation of the original depression existing in the young 
corpuscle, when the latter was a disc. In the young corpuscle on the 
right, c is still a mere disc, having a diameter of yoo'" ■ At a certain 
part, the membrane of c presents an orifice, indicating the situation of 
the future germinal spot. (Acetic acid.) 
Fig. 165. From the same ovary. Corpuscles having the same appearance as young 
t The same letters are here used, and they denote the same objects, as in my memoirs on Embryology, ll. c. 
