542 
A. LIAUTARD. 
catheter was introduced, and about six ounces of coffee-colored 
urine escaped, when it ceased to run. Upon removal, the catheter 
was found to be obstructed by coagulated blood and concretions 
of muco-purulent matter. Twelve ounces of tepid water were 
injected into the bladder, very little of which could be removed, 
owing to repeated obstruction of the catheter. The little that 
was removed had a very foetid odor. 
It was decided to explore the bladder, and, with this in view, 
the operation of urethrotomy was performed. The horse was 
placed in a standing position in the stocks, and a flexible catheter 
was introduced. An incision was then made in the perinseum on 
the median line into the urethra. The catheter was then removed, 
and by digital exploration the obstruction could be distinctly felt. 
The urethral canal, in its membranous portion, had been so nar¬ 
rowed as to scarcely admit the little finger. The endoscope 
showed it to be completely obstructed at its prostratic portion, not 
alone by the new growth from its walls, but by the mass of float¬ 
ing substance within the bladder. 
A diagnosis having been made of carcinomatous growth, in¬ 
volving the mucous lining of the bladder and urethra, it was 
decided to destroy the animal, which was done on the following 
day. In the post mortem great care was taken to remove the 
urinary apparatus complete. The penis was diss». cted back, the 
floor of the pelvis sawn through and removed, and the kidneys, 
ureters, bladder and urethra were removed intact. Several small 
tumors found on the mesentery and posterior aorta were reserved 
for microscopic examination. 
The left kidney was slightly enlarged, weighing twenty-six 
ounces. Its capsule was readily removed, and externally it pre¬ 
sented a normal appearance. When cut, it was found to be some¬ 
what softened. 
The right kidney was very much enlarged, weighing ninety- 
four ounces. Its capsule was so closely adherent as to render its 
removal impossible. When cut into, it was found to be much 
softened, pale in color, especially round the pelvis, where it was 
partly broken down. The ureter was enormously distended with 
•muco-purulent urine, of a gelatinous consistency, which also com- 
