CANCER OF NERVES AND DRAIN OF A COW. 
123 
the left nasal fossa, was three or four times its natural size, 
except for a short distance where it passes from the orbit into 
the cranial cavity; and even this small portion of the nerve was 
as much enlarged as the small bony canal through which it 
passes would admit of. 
I next removed the roof of the cranial cavity for the pur- 
pose of examining the brain and the nerves within the cra- 
nium. The brain itself had a very remarkable appearance. 
It was of a palish yellow-white colour, and something like 
soft putty in consistence. It had lost all the elasticity which 
a healthy brain possesses, and when pressed upon by the 
fingers, the indentations remained ; giving evidence of its not 
having been supplied with blood to an extent consistent with 
health. 
The brain being removed from out its cavity, with the ex- 
ception of the pituitary-body, its base was found to present 
the same appearance as the upper surface. The nerves 
vrere attenuated at their roots, but in other respects they 
were apparently healthy, with the exception of the olfactory 
and the trigemini of the left side ; and even the latter, quite 
at its root, was simply wasted. A short distance, however, 
from its origin, embracing the casserian ganglion, and also 
the three divisions of this nerve, up to w-here they pass 
out of their respective openings, it w 7 as enveloped in a 
mass of abnormal structure, in magnitude as large as a 
w r alnut. From this point, as I have before stated, the three 
divisions were very much thickened for about two inches in 
their course. The above abnormal growth extended to, and 
implicated the pituitary body, as w 7 ell as the dura mater on 
one side and in front of the sella-turcica. The left olfactory 
bulb, and the nerves w hich pass from it through the cribri- 
form plates of the ethmoid bone w r ere affected in the same 
w^ay, as was also the lateral nasal nerve. 
Thus far I have given a brief outline of the ravages of dis- 
ease. Before 1 describe the physical characters of this 
morbid product, and give my opinion as to its nature, I will 
just allude to the pathological condition of the internal carotid 
arteries, the left artery in particular. This artery, from the 
point w T here it is given off from the carotid, w T as completely 
impervious to the passage of blood, being surrounded by 
the diseased growth that involved the casserian ganglion, 
W'hich, doubtlessly, had much to do w 7 ith its obliteration. 
The diameter of the interior of the right internal carotid 
was so much lessened as scarcely to admit of a bristle being 
passed through it. 
The appearance of this abnormal growth, affecting the 
