168 
CALCULOUS AFFECTION. 
from its insertion into the bladder. This latter appeared to have 
been impeded in its course bv some contraction which it was un- 
able to get through. 
Besides this, a rupture of more than two centimetres in length 
was observable in the mucous membrane near the kidney, at the 
origin of the ureter ; this wound was covered by a black clot of 
blood : and hence, doubtless, came those haemorrhages which ap- 
peared during the few last days of the animal’s life. 
The bladder was nearly of its natural size ; the neck presented a 
round opening of seven or eight centimetres in diameter. The 
ureters penetrated directly into it through two large insertions, 
which, under certain circumstances, were likely to permit the urine 
to flow back again into the ureters. 
The cyst which had held the calculus communicated in front 
with the bladder, and behind with the canal of the urethra, of 
which it was but a dilatation ; the membranes composing it were 
thinner than those of the bladder, and shewed no trace of any 
fleshy fibre. Lastly, the vesiculse seminales, which were con- 
siderably longer than they usually are in geldings, communicated, 
as did the prostates, with this cyst by means of their natural ducts, 
which were abnormally lengthened. 
Such, gentlemen, were the various lesions I observed. Not 
wishing to trespass on your valuable time, and your kind attention 
to me, I will now terminate this case, which has, doubtless, already 
occupied you too long, with one or two short observations. 
I would, in the first place, gentlemen, have you to remark, that 
if vesical calculi are generally developed in the interior of the 
bladder, this one, the history of which I have just laid before you, 
was developed in the kidney. The two irregular-sided concretions 
of a similar nature which I observed in the right ureter, militate 
in favour of this argument. Lastly, I would add, that the excel- 
lent treatise on calculous affections, published in 1834, by your 
Honorary President, M. Girard, as well as other and more recent 
publications which I have consulted, containing no case similar 
to this, I consider myself authorized in believing this case to be 
one by itself, and without parallel in veterinary medicine. 
It is you, gentlemen, who must decide whether or not this 
opinion, which I have the honour of submitting to you in the form 
of a doubt, is well founded or not. 
Recueil de Medecine Veter inair e , April 1845. 
