DEPOSITS OF LYMPH AROUND THE TRACHEA. 
67 
outer table of the frontal bones, before alluded to, pressed 
upon these ethmoidal cells, the lining membrane of which 
was much reddened, and also thicker than natural. A 
portion of the distended olfactory bulb protruded inwardly 
between the neck of the bone and the detached cribriform 
plate. This part of the brain, with the mucous membrane 
of the upper and posterior portion of the nasal passage, 
which was very much thickened, formed an enlargement 
that pressed against the septum nasi, to such an extent as to 
bend it not only into the other nasal passage, but upon the 
ethmoidal cells of the opposite side, thereby causing a 
deep concavity on their surfaces. The mucous membrane 
of the frontal sinus, immediately under the depressed portion 
of bone and for some distance around, was thickened ; and 
the cavity contained coagulated fibrine, as did also the spaces 
between the folds of the ethmoidal cells. 
It would be very important if we could ascertain the cause 
which gave rise to these morbid changes, and how long a 
time had elapsed since they commenced. We would ask— 
was the injury received on the forehead the primary cause 
of this disease ? How can we understand the horse being- 
in the possession of his owner for six months, and during 
that time no symptoms having shown themselves so as to 
indicate disease at any time, with the exception of an 
occasional cough, and which had passed off previously to 
his death ? Indeed, the owner informed me that the horse 
w r as in as fine condition the day before he died as he had ever 
known him to be. He v-as five years old off. 
EXTENSIVE DEPOSITS OF LYMPH WITHIN AND 
AROUND THE TRACHEA OF A COW. 
By Charles Dickens, M R.C.Y.S., Kimbolton. 
My dear Sirs, —Professional pressure prevented my 
doing more than enclose my card with the lower portion of a 
trachea, which I forwarded to you per rail yesterday, belong¬ 
ing to a cow T that I deemed prudent to have killed on Friday 
last. 
You will observe, that the interior of the tube is nearly 
filled by adhesive lymph, a large mass of which also sur- 
