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



Corpuscles, having the same appearance as corpuscles of the blood, 

 passing- into pale cells, — the elements of the crystalline, a. Outline of 

 two of these corpuscles, which were but little changed. Their contour 

 was irregular. Corpuscles in such states, when required to pass through 

 a minute space, undergo remarkable alterations in their form, and are 

 seen to be susceptible of extreme attenuation. |3. Composed of discs. 

 Two brilliantly pellucid orifices are seen on one side ; this being the 

 situation of the originally single orifice in the corpuscle or disc, before 

 its division into other discs. This is the situation, also, of the nucleus 

 of the future cell, if formed, y. Flattish corpuscle, composed of discs, 

 and blood-red. ^, h. Corpuscles resembling y, but larger, and in little 

 more than outline, g, g. Nucleated cells. The nuclei are dividing into 

 discs. ^. An orifice in the nucleus, apparently communicating with 

 the exterior of the cell. This orifice would have been the situation of 

 the future nucleus, after the division of the present one into discs ; 

 which discs were already formed, but not separated, t]. Besides a nu- 

 cleus, consisting of discs, the cell exhibits discs in its cavity. Only 

 two of these are represented in the drawing. All the objects in this 

 figure presented red colouring matter ; which in a, (3, y, I pervaded the 

 entire object ; but in g, Z,, and t], was confined to the nucleus. 

 Fig. 156. Ox; foetus of ten inches. From the crystalline lens. Outline of cells, 

 the elements of the crystalline, for the most part exceedingly pale. 

 They were altered corpuscles having the same appearance as corpuscles 

 of the blood ; and presented states which, in general (not in every in- 

 stance), were more advanced than those in fig. 155. a. The contour 

 irregular, from the incomplete formation of the membrane, which discs 

 were coalescing to produce. The dark round object is the future nu- 

 cleus. In it is an orifice, communicating with the still incipient cell. 

 This orifice indicates the situation of a future nucleus, to form as the 

 existing one divides into discs. |3. A state resembling a, but the nu- 

 cleus already composed of discs. 7. The nucleus has divided into two 

 portions, each of which consists of incipient discs. ^, ^. A nucleus not 

 visible. But the interior of the cell presented discs ; too indistinctly, 

 however, to admit of delineation. Such was the case also with the 

 cell 7. 



PLATE XXV. 



Fig. 157. Ox; foetus of ten inches. From the crystalline lens. Incipient fibres, 

 forming by the coalescence of cells of the same kind as some of those 

 in figs. 153, 154, 155, 156; which are derived from corpuscles having 



