436 CANCEH. OF THE PENIS AMPUTATION. 
standing he micturated properly, the penis had not been pro- 
truded for several weeks previously. The disease only became 
apparent when it had increased so much that it could no 
longer be concealed within the folds of the sheath. On being 
relieved from the constriction, and probable contraction of 
the orifice of the sheath, it was able to grow more rapidly 
than when under the confinement mentioned. 
The pony had a good appetite, w r as lively in spirits, and in 
good condition, and did not appear to have suffered from pain 
during the progress of the disease, excepting when the raw 
surfaces of the tumours were rubbed or touched. There had 
been a good deal of haemorrhage at different times, and just 
before the operation a rather profuse bleeding occurred, which 
produced a slight amount of constitutional debility, which, 
however, speedily passed off. 
On casting the patient, and drawing out the penis to its 
full extent, I found that the cancerous growth extended up the 
body of the organ ; I therefore determined to remove it en 
masse. Having an assistant drawing gently at a ligature, and 
having secured the upper end of the penis in a clam, as close 
up to the body as possible, I cut through the penis with a 
sharp firing iron warmed to a moderate heat. No haemorrhage 
took place. At the same time I removed a small epithelial 
cancer from the inner side of the off thigh. 
Examination of the parts removed . — The principal portion 
consisted of a tumour rather larger than a goose's egg, flat- 
tened, and somewhat oval in shape, extremely hard, almost as 
much so as cartilage. The section was quite smooth and ho- 
mogeneous, no bloody points, ver}' much in appearance like 
the section of a potato, the technical name of which is solanoid 
(potato-like). The tumour was enclosed in a thin cyst, which 
was very vascular on the outside, moist and shining, had bled 
very readily before it was removed. At its most extreme part 
another tumour, about the size' of a hen’s-egg had been at- 
tached by a short pedicle. It was of a different structure from 
the one from which it sprung, being more of a hsematoid nature, 
the section presenting a dark appearance, like the section of 
a tumour of fungous hsematoides in the human subject. It was 
enclosed in a thin cyst like the larger one, the outside being 
covered by a firm coating or crust of coagulated blood, 
apparently recently effused upon its surface. This smaller 
tumour had become detached from the larger one, through 
the struggles of the patient when being cast. There were 
three other tumours about the size of walnuts, attached 
to the larger one, of the same dense structure as described. 
There was also another one which was not exactly in connec- 
