PR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
259 
all were either corpuscles themselves, having the same appearance as 
blood-corpuscles, or immediately derived from such corpuscles. The 
less advanced of these objects had the same appearance as young 
blood-corpuscles ; these passing into the objects more forward, a, (3, y, 
Presented exactly the same appearance as young corpuscles of the 
blood, a Becoming orange-shaped, — blood-red ; (3 , nearly globular, — 
an orifice in the situation of the original depression presented by the 
corpuscle when discoid in form : paler, yet blood-red. y. Discs visible, 
yet indistinctly, from the presence of red colouring matter. Dark 
blood-red. «$. Paler, yet still blood-red. g Resembles but is more 
advanced, — being paler, and the discs being more distinct. £. Two 
sets of discs, an inner and an outer ; the inner, deep red, — the outer, 
pale red. This seems to correspond to g more advanced ; the inner 
discs of £ occupying the situation of the pellucid centre of g. q, y. Three 
concentric parts, — namely, first, an outer part, consisting of pale and 
nearly colourless discs — this being the oldest part of the corpuscle ; — 
secondly, a middle part, composed of blood-red discs (obscured in one, 
distinct in the other), — this part being the next in age ; — thirdly, a 
central, round, blood-red object, pellucid in its middle, which is the 
newest part. 0. A mass of blood-red discs. 
Fig. 134. Objects from the medullary portion of the brain in the same calf; ob- 
served along with such as those in the preceding figure. The same 
general remark as that in the explanation of fig. 133, respecting discs, 
form, colour, and origin in corpuscles having the same appearance as 
blood-corpuscles, is applicable here, a, (3. Young blood-corpuscles ; 
both blood-red. (3 Is passing into discs, y. Mass of quite red discs. 
<5. The outer discs almost colourless ; the middle set, as well as the cen- 
tral part, still red. Compare with q, q of fig. 133, of which <$ in the 
present figure seems to be a more advanced state. The pellucid object 
in its central part, more defined. (Compare with the remarks in the 
explanation of fig. 43 (3 in Part II.) g. Discoid, and very pale ; yet 
reddish. These objects were present in large numbers, and contained 
discs themselves. They resemble in some degree the corpuscles from 
which they are derived. Not generally seen in rows. 
Fig. 135. Common Fowl; chick in ovo. From the leg. Cells having the appear- 
ance of altered young corpuscles of the blood. Quite as red as blood. 
a. Outline of some of these arranging themselves to form muscle. 
(3. Another, exhibiting the internal state. It was filled with discs ; — 
outer part of the nucleus, a layer of very minute discs. The inner 
part of the nucleus consisted of finely granular substance. Centre, an 
orifice (par. 161.). (Dilute spirit.) 
2 M 
MDCCCXLI. 
