DR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
213 
having 1 become in two instances oblique, in another instance situated 
on one side. (3. It is dividing into two parts, y. This division is com- 
plete. L From the direction of the nucleus, only one of its extremities 
is seen. The corpuscle in this instance had lost its flattened form, but 
not yet become globular. 
Fig. 38. Sparrow {Fringilla domestica, Linn.). Nuclei of blood-corpuscles, after 
the removal of the surrounding substance by acetic acid. 
Fig. 39. Sparrow ( Fringilla domestica. Linn.). Two blood-corpuscles filled with 
discs, or young corpuscles ; and two young corpuscles in nearly the 
same state, but no longer contained within a parent corpuscle (cell). 
Acetic acid had been added in minute quantity. 
Fig. 40. Common Fowl ( Phasianus Gallus, Linn.) in an egg incubated eighty hours. 
Outline of blood-corpuscles. An orifice is visible in some, and not in 
others. 
Fig. 41. Blood-corpuscles from the same egg, after the addition of acetic acid. 
They are represented partly in outline, a. The nucleus consists of two 
discs. (3. It is composed of several, y. Globular corpuscle filled with 
young corpuscles. 
Fig. 42. Common Fowl ( Phasianus Gallus , Linn.), in an egg incubated eighty-five 
hours. Outline of blood-corpuscles. (Discs were indistinctly visible 
in the interior, even before the addition of any acetic acid.) 
Fig. 43. From the same egg. Outline of blood-corpuscles, after the addition of 
acetic acid. «. The corpuscle has an elongated orifice. (3. The corpuscle 
is filled with minute cells. Its finely granular nucleus has a pellucid 
cavity, communicating with the exterior of the corpuscle (compare this 
object with the germinal vesicle, Phil. Trans. 1840, Part II. Plate XXII. 
fig. 159.). This orifice is originally larger. It becomes reduced in size 
with the appearance of the finely granular substance : the latter pre- 
ceding the formation of the discs, into which the nucleus is resolved, 
y. The nucleus consists of two discs. L The nucleus is composed of 
several discs. 
Fig. 44. Common Fowl ( Phasianus Gallus, Linn.), in an egg incubated ninety-two 
hours. Outline of corpuscles of the blood. 
Fig. 45. From the same egg. Blood-corpuscles, chiefly in outline, after the addi- 
tion of acetic acid. These were globular, or nearly so, excepting two, 
which were elliptical. The latter form was not frequent after acetic- 
acid had been added. All the corpuscles in this figure were seen to be 
filled with discs or incipient cells, a. Corpuscle with a large orifice. 
(3. The nucleus finely granular, with a minute cavity (see the descrip- 
tion of fig. 43.). y. The nucleus as in (3 ; concentric layers of discs or 
incipient cells around it. L The orifice elongated, with an accumula- 
2 f 2 
