566 
CASE OF POLYPUS IN A MARE. 
charge from near nostril, and the mucous membrane was very 
much congested. On closing the off nostril I found that no 
breath passed through the other: I examined the nostril 
minutely, but could not discover any obstruction. I had her 
frequently steamed with hot water, and tepid water injected 
up the nostrils, and a blister applied over the frontal sinuses. 
The animal still continued to get worse up to the 27th, 
and a tumour could now be felt in the nostril, and I informed 
the land steward that the only way it could be got at was by 
the trephine operation. 
About this time it was thought advisable to have more 
advice, as the animal was a very valuable one, and I, along 
with Mr.-Masson, V.S., Kintore, saw her on the 28th, and 
we succeeded in extracting a tumour from the near nostril 
weighing 1 lb., hut still a large portion remained within the 
cavity, and as we had not a trephine at hand we made an 
appointment to meet the following day, and lay open the face 
and extract the remaining portion. We had not, however,, 
long gone when the remaining portion came away of itself, 
the weight of which was Ihs., and as the animal seemed 
much relieved we deemed it prudent to defer operating, and 
had the nostril dressed frequently with acid carbolic loz., 
aqua 12 oz. The animal was put to work, and continued at 
it with little inconvenience, and toward the end of December 
another tumour as large and similar to the former came off. 
I extracted another in April, 1869. About May 20th she 
became unable for work, and showed symptoms of suffering 
from pressure on the brain. 
May 25.—The animal was seen by Messrs. Dewar, V.S., 
Midmar; Masson, V.S., Kintore; Diack, V.S., Old Mel- 
(Irum; and myself. 
We operated on her, and a great quantity of unhealthy 
pus escaped from the frontal sinus, but on consultation we 
thought it advisable to put off extracting the tumour (which 
we found to be very large) in the hope that the escape of pus 
would relieve the coma. The mare was put under stimulant 
treatment, but she got worse, and had to be killed on the 
third day after the operation. 
Post-mortem .—On opening the face I found the whole 
passage from the false nostril to the larynx completely filled 
with a tumour, or rather a cluster of tumours, having four 
different attachments, one being to the four posterior molar 
teeth which were all diseased, and a large abscess was formed 
along the same; the other attachments were to the posterior 
nares, the septum nasi and ethmoid bone; all the bones in 
contact with the tumour were in a diseased state, and denuded 
