DR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 261 



to Tho"'y and filled with red blood. One of the minutest is seen at a. 

 The corpuscles in it were pressed into irregular forms, a, a. Some of 

 the same vessels, in outline. |3. Corpuscle of the blood, filled with 

 young corpuscles ; these being mere discs, elliptical, and differing from 

 other discs only in being redder, y. Outline of two of the same parent- 

 corpuscles, which were filled, in like manner, with young corpuscles ; 

 their membranes shrivelled. S. Parent-corpuscles of the blood, rup- 

 tured, and from which young corpuscles were escaping. Some of the 

 latter were still elliptical ; while others had become round, but con- 

 tinued flat. g. Young blood-corpuscles, larger than those at i. 



PLATE XXIV. 



Fig. 142. Ox; foetus often inches. From the posterior surface of the crystalline 

 lens. Vessels here radiated from central trunks, towards the margin 

 of the lens. On the left hand in the figure, are three corpuscles having 

 the appearance of much altered corpuscles of the blood. A few blood- 

 corpuscles have been represented in the portion of vessel figured. It 

 contained many not here shown. Most of the corpuscles figured, as 

 well as the vessel itself, are in outline, a. Young blood-corpuscles, 

 still elliptical, mere discs, and red. |3. Blood-corpuscle in nearly the 

 usual state, y. Form altered, but the corpuscle still quite red. §. Blood- 

 corpuscles dividing into discs, and of a paler red. g. This division of 

 the blood-corpuscle into discs, has proceeded farther ; and the effects are 

 seen of the same process as that which forms cellular tissue (par. 134.). 

 ^. Pale discs, derived from blood-corpuscles. >?. Corpuscle having the 

 appearance of an altered corpuscle of the blood. It consisted for the 

 most part of pale red discs. Two of the discs presented by this cor- 

 puscle, were of a deeper red, and had a darker outline. These occu- 

 pied the situation of the original orifice, and afford a remarkable in- 

 stance of the identity of the process effecting changes in corpuscles, 

 having the same appearance as blood-corpuscles, with that producing 

 the first alterations, post coitum, in the mammiferous ovum ; and also 

 of the similarity between the changes producing pus-globules, and 

 some other objects. 0. Corpuscle, having the appearance of a blood- 

 corpuscle very much enlarged. It was colourless and brilliantly pel- 

 lucid in the situation of the original orifice ; and at the part surround- 

 ing this, the corpuscle was blood-red, presenting indications of the 

 formation there of discs. /. Similar state of a corpuscle of smaller 

 size. 



2 M 2 



