310 
A. LIAUTARD. 
as it does now, irregular in shape, soft at places, hard at others, 
and giving in some parts the sensation of a collection of pus under¬ 
neath. The cavities of the alveolae are all filled with new growths, 
somewhat hardened, showing on their lower surface the marks of 
the lower molar teeth. The second cavity, from which a 
healthy tooth had recently been extracted, was filled with partly 
masticated food ; the palate bone is diseased in its whole extent 
and the mucous membrane of the regions on the opposite side is 
separated from the teeth by an accumulation of pus extending 
more or less into the alveolae on that side. Sections being made 
through the head a little on one side of the median line, show 
the septum nasi healthy, and tliis being taken off allows a full 
view of the nasal cavities. 
On the right side, in the meatuses, in the cavities of the tur¬ 
binated bones, in the sinuses, you will observe several malignant 
growths of various sizes extending back into the fauces and clos¬ 
ing them, thus interfering with respiration during life. A similar 
condition, though less marked, is also found on the left side. 
The diagnosis of cancerous disease was then made too evident, 
and it remained for the microscope to establish the true nature of 
the malignant process of that specimen. 
Dr. Peabody, to whom I referred that investigation, kindly 
consented to examine various pieces taken from the alveolar cav¬ 
ities and from the tissue forming the growth on the outside of the 
face; and came to the conclusion that it was not a case of osteo 
sarcomatous degeneration, as I thought, but one of carcinomatous 
development,—a fact after all which can scarcely convict me of 
error, both diseased processes being malignant in their characters, 
and which certainly does not in any way alter my prognosis of the 
case. 
What is generally known in veterinary science as osteo sar¬ 
coma I have met four times, and I doubt if any veterinarian 
would not have made the same diagnosis, unless microscopic ex¬ 
amination was made; a lesson which I have received in this case, 
and that I will not forget. I hope other veterinarians will profit 
by it also, and investigate into the microscopical nature of similar 
tumors before arriving at a final conclusion. 
