[ 595 ~] 
XXIV. On the Corpuscles of the Blood. By Martin Barry, M.D., F.R.S., F.R.S.E., 
$c. 
Received May 14, — Read June 4, 1840. 
The principal facts recorded in the following memoir were incidentally observed 
during the researches which formed the subject of my last comm unication 
(The measurements in this paper, as in former ones, are stated in fractions of a 
Paris line, and thus expressed ("')). 
Progressive Division of the Blood-disc into Globules. 
1. My examinations of the internal generative organs in the Rabbit have generally 
been made at a period when these parts were found more or less highly vascular. In 
fluid collected at this period from the surface of the ovary, from the fimbriated por- 
tion of the Fallopian tube, or from the infundibulum, it is usual to find a large quan- 
tity of corpuscles of the blood, which are present also in other parts of the oviduct. 
It thus appears that blood-corpuscles become extravasated in these parts at the period 
in question. 
2. Many of these corpuscles present an appearance (Plate XXIX. figs. 1. 2. u) re- 
sembling that generally exhibited by the corpuscles in blood obtained by venesection. 
But a very large number are in altered states, an idea of which may be obtained from 
such of the objects in fig. 2. as are not distinguished by a letter. 
3. More particularly examined, and in considerable number, the objects in question 
are found to present every shade of transition between the unaltered blood-corpuscle 
Plate XXIX. fig. 1. a, and the mass of distinct globules, fig. 2. &. This will be seen 
on inspecting successively «, (3, y, of fig. l,and then the numerous unmarked objects 
in fig. 2 ; beginning in the latter figure with those most resembling y of fig. l^. 
4. Several of the appearances in the figures just referred to, will be recognized by 
those who have watched blood-corpuscles in the microscope, when undergoing the 
first alterations in their form. I find, however, that the presence of blood-corpuscles 
in these altered states, in the fluid above mentioned, is constant, — and this too when 
the parts are examined as early as a few minutes after the animal has been killed, — 
when therefore they are still warm. And what is more, in a portion of the fimbriated 
4 Researches in Embryology, Third Series : A Contribution to the Physiology of Cells. Philosophical 
Transactions, Part II., 1840, p. 529, that is, the present volume. 
I It is perhaps deserving of notice, that a central pellucid cavity similar to that in other objects of this figure, 
■was not observed in the centre of the mass of globules £. Does it disappear as these globules form ? 
4 g 2 
