CALCULI IN THE BLADDER OF A DOG, 1451 
sidered that there was no hope of the animaPs recovery. 
He died on Saturday morning, February 13th. 
Post-mortem examination —The abdomen was opened down 
to the pubis, and part of the pelvis was removed. The 
bladder and other parts of the urinary organs were disseeted 
out entire. 
The bladder was observed to be dark in colour over the whole 
surface from intense congestion. Upon making a section into 
the viscus, there escaped a quantity of deep dark-coloured 
fluid, and also two calculi about the size of large peas, spherical 
in shape, and upon further examination, intermingled with 
some mucus, there were seen numerous small ones of a seed¬ 
like character; one of a larger size was found to have passed 
into the urethral canal, and there being perfectly impacted, 
had resisted all efforts of the animal, or contraction of the 
bladder to overcome the obstruction. This appeared to be 
the immediate cause of death. 
The extensively distended condition of the bladder appeared 
also to interfere with the action of the rectum. 
We think the case a highly interesting one, and would feel 
favoured by its insertion in your pages. 
Examination of the Diseased Structures. 
The organs which Messrs. Gowing and Son sent for inspec¬ 
tion were the generative organs, with the bladder, kidneys, 
liver, and intestines, all of which, excepting the bladder, were 
normal. In the interior of this viscus the morbid changes 
were very marked, the whole of the mucous membrane was 
intensely congested, and in many places patches of extrava- 
sated blood were firmly adherent to the surface. A quantity 
of dark-red fluid was taken from the bladder, and set aside for 
further examination. The most remarkable feature of the 
morbid changes was the existence of a large number 
of small calculi, varying in size from a pin’s point to a 
large pea, principally clustered in the neck of the bladder, 
which was quite black in colour, on account of the quantity of 
effused blood in the submucous tissues. In the urethral 
canal, which was cut open, the lining membrane was much 
congested, but there was no calculus, excepting the one to 
which Mr. Gowing alludes, and which was the direct cause of 
the fatal termination of the disease. 
