REPORTS OF CASES. 
173 
Examination, on entering the hospital, showed the anus con¬ 
siderably deformed and protruding irregularly. There was found a 
large tumor on the left side of anus, which was irregular in shape, 
and bosselated upon its whole surface. There was also a number 
of small melanoma, varying in size from a pea to a walnut, along 
the tail from the base to the end. 
On rectal examination, we found the tumor on the side of the 
anus extended into the pelvic cavity about four inches, and farther 
inward, as at the end of this, there was another tumor situated in 
the superior wall of the rectum. On manipulating this last 
tumor, it was found to be movable from forward backward, and 
in size about that of a man’s fist. Immediately forward of this 
was another collection of small melanoma. On account of this 
condition operation was scarcely advisable, and, if successful, 
could at best be only palliative. The owner, however, decided 
to make an attempt, and according to his wishes the animal was 
operated on on the 18th. 
Operation .—It was tried at first to operate with the animal 
standing, after having received a dose of chloral, but this being 
impossible, he was cast and secured. An incision was then made 
immediately under the base of the tail, downward, on the left 
side of the anus, about six inches in length, and the largest tumor 
was removed by tearing off the pelvic cellular tissue outside of the 
rectum; other smaller ones were removed in the same manner. 
The growth on the superior wall of the rectum was found to be 
between the muscular and mucous coats, was made to slide back¬ 
wards by pushing toward the anus, and was removed by cutting 
through the mucous membrane. At that stage of the operation 
an effort of traction to enucleate the tumor was followed by a 
laceration of the rectum, and the left margin of the anus. The 
two large masses of melanotes weighed four pounds and a half. 
The wound was carefully washed and dressed with oakum, 
and the edges brought together by single suture. 
On the following day the oakum was removed from the 
cavity, which was irrigated with cold water, the surrounding parts 
washed, and the tail bandaged; pulse and temperature normal; 
no appetite ; had passed some soft foeces during the night. On 
