DR. MARTIN BARRY ON THE CORPUSCLES OF THE BLOOD. 
219 
but that, in all instances, and whatever the minuteness of the object, the division in 
question takes place by a similar process, — a process which we found to be elaborate 
in the extreme. 
93. The expression, having the same appearance as the corpuscles of the blood, is 
constantly made use of in the following - pages ; though most of the corpuscles to 
which it is applied would have been at once denominated corpuscles of the blood, 
but for a reason given in the concluding portion of the memoir (par. 196.). 
94. Besides the substances above mentioned, I have examined the pus and mucus 
globules, which I shall first describe. 
The Globules of Pus derived from Corpuscles of the Blood: — Mucus-globules compared 
with them. 
95. “The nucleus of the mucus-corpuscle,” says Schwann, “has the peculiarity, 
discovered by Guterbock, of becoming separated into two or three corpuscles of 
minuter size by acetic acid ; while the surrounding part is gradually dissolved by 
this reagent. Vogel supposes this property to belong only to pus-corpuscles, and 
to the corpuscles of unhealthy mucus. Henle, however, informs me,” continues 
Schwann, “that the same peculiarity *** is found in the true mucus-corpuscles, 
present in healthy mucus-f~.” Respecting pus-corpuscles, Schwann remarks, “They 
share with them [corpuscles of mucus] the peculiar relation towards acetic acid^.” 
96. My own observations on this subject are the following. In Plate XX. fig. 
64 (3. are pus-globules, to which no addition whatever had been made ; and fig. 63 £ 
presents one of these globules, as viewed after the addition of dilute spirit. Now as 
the objects in both figures exhibit the division of the “nucleus,” just spoken of, 
without the addition of acetic acid, I am compelled to form an opinion opposed to 
that of the authors just referred to, and to maintain that in the pus-globule acetic 
acid is not required to produce such division. 
9 7- But facts recorded in several of my former memoirs appear to have been suffi- 
cient for showing that neither acetic acid nor any other foreign substance is required 
to produce division of what has been called the nucleus of the pus-globule ; such 
division being part of the process by which cells are reproduced, and apparently 
universal in its operation. The present memoir, also, will be found full of facts, 
showing that this really is the case. 
98. As to the mode of origin of the objects in question, Schwann remarks, “The 
pus-corpuscles are thus probably peculiar cells, forming in the pus-serum, that is in 
the cytoblastema, which in inflammation exudes in greater quantity and unusual 
mixture, in the same manner as the mucus-corpuscles form in mucus, and as all cells 
+ Mikroskopische Untersuchungen iiber die Uebereinstimmung in der Struktur und dem Wachstkum der 
Thiere und Pflanzen, 1839, pp. 77, 78. 
+ L. c., pp. 78, 79. 
2 G 
MDCCCXLI. 
