DR. 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, I, 

 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. s Resembles h, 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. ri, rj. 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, j3. Young blood- corpuscles; 

 both blood-red. |3 Is passing into discs, y. Mass of quite red discs. 

 ^. The outer discs almost colourless ; the middle set, as well as the cen- 

 tral part, still red. Compare with ri, ri of fig. 133, of which I 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 m ovo. From the leg. Cells having the appear- 

 ance of altered young corpuscles of the blood. Quite as red as blood. 

 05. 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.) 



MDCCCXLI. 2 M 



