WITH IODINE AND THE SUL F HATE OF COPPER. 637 
of iron, which had undoubtedly lodged there at the time he was 
castrated, and formed the nucleus of this disease. I think, as well 
as I can remember, that the tumour weighed three pounds and a 
half. The horse was hunted a couple of months afterwards. 
In June in the present year, I was requested to examine a horse 
that the dealer described as having a large wart where his testi- 
cles ought to be, and that a farrier had been applying caustic to 
bum it away, but without success. The minute I looked ^t it 
I saw the nature of the disease, and, after making some inquiry, 
found that, although he was fourteen years old, he had only been 
castrated about three years previously, and that, since this time, 
there had been a slight discharge from the spot that had been 
occupied by the tumour. I then described to the gentleman the 
nature of the case, and told him that nothing but excision would 
be of any service. 
I neither heard nor saw any more of the horse until the 24th of 
September, when the owner came into my yard and told me to 
do what I wished with him, as he was so bad that he could not 
pass his urine, which 1 found arose from the tumour pressing on 
the penis. I accordingly cast him, and found that it had a most 
enormous base, running downward and forward into the sheath, 
and upward along the cord to the external abdominal ring. 
I first proceeded to turn back the skin by careful dissection, in 
order to form a flap to cover over the aperture and keep the 
air from the place occupied by the tumour, and then I cut down 
to its base, and, by the able assistance of his owner, Dr. Waters, 
succeeded in removing a diseased mass, weighing six pounds and 
a half. 
The arteries being all well secured by ligature, and the flaps 
properly united by suture, the poor animal was released, of course, 
rather exhausted, but yet able to walk into the^ stable, after an 
operation of one hour and forty minutes. My after-treatment con- 
sisted in occasional laxatives and low diet. 
He is now in excellent health, eating a feed of oats a day, and 
any other thing that a, person will give him, as his appetite is 
capital, and he is in high spirits ; but the wound is not yet healed. 
I must not forget to mention, that there was a great infiltration of 
urine into the cellular tissue of the abdomen, anterior to the 
sheath, a few days after the operation, and which I found neces- 
sary to open with the lancet. 
