DR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
247 
single disc, or two or three discs. Where the discs of the nucleolus 
lie one on the other, the degree of refraction is very small. /3. Similar 
objects, as viewed after the addition of dilute spirit. Each of the two 
lower ones has the appearance of being circumscribed by a membrane, 
and is contained within a minute cell. The upper object presents three 
layers of discs ; the outer layer being pale. 
Fig. 65. Man. Fragment of a capillary vessel, found in the pus of the preceding 
figure. It is filled with altered corpuscles of the blood. The largest 
corpuscle presented an appearance resembling that of the pus-globule. 
(Acetic acid.) 
Fig. 66. Man. Altered blood-corpuscles, observed in fluid from abscesses. 
Fig. 67- Man. Altered blood-corpuscles, observed in fluid from the intestinal 
canal, where the existence of pus was suspected (compare with fig. 63.). 
a Corresponds, apparently, to the “ lymph-globule” of authors. 
Fig. 68. Man. Globules and cells in mucus from the air-passages of a healthy 
person. This mucus had in some parts a slight tinge of yellow. 
(Acetic acid.) 
Fig. 69. Man. Globules and cells in mucus from the air-passages of a healthy 
person. This mucus was a tenacious, colourless, pellucid fluid. (Acetic 
acid.) 
Fig. 70. Man. Cells in mucus from the Schneiderian membrane. The discs blood- 
red. (Acetic acid.) 
Fig. 71. Man. A later stage of apparently corresponding objects, taken from the 
same part. (Acetic acid.) 
Fig. 72. Man. From blackish mucus of the air-passages, a. Corpuscle having 
the same appearance as a young corpuscle of the blood ; blood-red. 
f 3 . Mass of blood-red discs ; which had the appearance of an altered 
corpuscle of the blood. Such also was the appearance of y, <5, s, <(. 
y In outline: colour blood-red. This object was elliptical, and pre- 
sented an orifice at one end ; the orifice occupying the situation of the 
depression existing when the corpuscle had a discoid form. The ob- 
ject y was composed of discs. £, e. Similar objects; but presenting 
numerous black points. Some of these black points are seen to have 
been in the centres of the discs, and others between the discs. The 
orifice was less distinct in s ; but there was a pellucid part in the same 
situation. Outline of a later state of the last-mentioned object. 
Fig. 73. From the same mucus. Corpuscles, having the same appearance as 
young corpuscles of the blood. They were of the characteristic colour 
of blood-corpuscles, and exceedingly minute, but not the minutest 
seen; mere points having been observed in large number, of the same 
colour, and apparently derived from the same source. f3. Outline of 
