81 
VESICAL AND BILIARY CALCULI. 
To conclude, I should like to be informed whether in those 
cases in which worms exist within the eye they are not to be 
found also under the meninges and other similar serous parts 
of the cerebral cavity of the ox, situations wherein the filaria 
papillosa are bred in horses. In fact I have great curiosity to 
know if the former of these worms owes its oririn to the latter. 
O 
VESICAL AND BILIARY CALCULI. 
/ 
By M. Riss, Veterinary Surgeon, bth Regiment of Cuirassiers, 
I 
IN March, 1824, I was sent for to see a horse, suffering from 
violent colic, which had since the day before resisted all the 
ordinary remedial measures of our country farriers. 
I was informed that the animal was subject to these attacks, 
which subsided as soon as an abundant flow of urine super¬ 
vened ; that he had continued at work, notwithstanding he had 
for the last six weeks very perceptibly lost flesh, and the colics 
of late had returned oftener, and his urinary evacuations so fre¬ 
quent that he had staled 15 or 20 times a-day, the urine being 
small in quantity, sometimes clear, but commonly bloody. This 
gave me almost certain information of the malady I had to 
treat. 
The symptoms I observed were—pawing, lying down, rolling, 
frequently rising, stamping with the fore feet, looking backwards 
at the flanks covered with perspiration, making frequent but 
fruitless efforts to stale, unsheathing the yard every time and 
retracting it afterwards; vacillation of the tail, after the manner 
of a horse teased by flies; pulse at the jaw hard and hurried; 
I found the bladder, per rectum, so distended that it ^filled the 
pelvic cavity, .but was unable by pressure with the flat hand 
upon it to force out a single drop of urine; indeed, pressure 
only served to augment the animafs sufferings. There was evi¬ 
dently an obstacle then to the discharge of urine : what was 
the obstacle ? 
I was prepared to pass a sound, when, tracing with my hand 
the course of the urethra, I found about three inches below the 
anus, a prominence in the perineum occasioned by an oval body, 
VoL. I.—No. 3. H 
I 
