72 
CANCER OF THE ORBIT OF A COW. 
long under my care, and as her owner did not like her to min- 
gle with his other cows, he sent her some distance from home, 
where I seldom had an opportunity of seeing her. The 
disease was first observed about six months since, at which 
time there was a vascular-looking excrescence protruding 
beneath the menribrana nictitans , which organ, in the course of 
time, from the rapid growth of the diseased structure, became 
displaced and lost to view. Both cauterization and excision 
were had recourse to, but failed to arrest the disease. In a 
short period it had spread to other parts in the immediate 
neighbourhood, and involved also the eyeball, and which, I 
was informed, ultimately sloughed out. The constitution 
did not appear to be affected until lately, and it is worthy of 
remark that during the progress of the disease she produced 
and reared a fine healthy calf. 
I am induced to send you the morbid parts with the hope 
of your making some remarks on the nature of the disease in 
the next number of the Veterinarian . 
[The specimen presented externally a very singular and 
even unsightly appearance, not only from the existence of the 
fungoid growths, but also from the sloughing condition of 
the eyelids and all the contiguous structures. The fungoid 
or morbid growths, which sprang from the integument, ex- 
tended from the median line of the face to about half way 
down the cheek on the right side. They entirely concealed 
from view the orbital opening, and on drawing them aside 
the site of the eye-ball was found to be occupied by a similar 
diseased mass, the organ itself being entirely destroyed. 
The integumental tumours were circular in outline, and 
closely compacted, having here and there between them 
small portions of healthy-looking skin. They varied con- 
siderably in size, the largest being about two inches in 
diameter; but the centres of several had sloughed, which 
gave to these growths a cup-like form. 
The section of the more perfect ones exhibited on their 
surfaces a white substance, which was dense, and arranged in 
the manner of laminae, vertically placed. Beneath this, and 
making up the chief bulk of the mass, was a pulpy substance 
of a yellowish colour, which extended inwards, united with 
the bases of other tumours, and occupied the place of the 
bones: and which were so completely changed as not to be 
recognised- as osseous structures, they being easily cut 
through, as an entire removal of their earthy materials had 
been effected. To the naked eye, the appearances of this 
part of the diseased mass did not essentially differ from the 
sub-integumental portion. 
