DISEASE IN THE EYES OF CATTLE. 
485 
pounds of blood, and gave a slight purgative, which appeared 
to afford temporary relief. 
For two or three days the appetite improved, and the cow 
appeared to move with greater freedom and less pain. On 
the sixth day after my first visit she suddenly relapsed, and 
died on the seventh. 
This animal had for some time past wasted in flesh, but as 
her general appearance was healthy, little notice was taken 
of it. It is surprising that she should have gone on so well 
as she did with so extensive disease of the heart. As to the 
nature of the affection I shall offer no remarks, but leave this 
to be explained by you. 
[This was but another of several specimens which we have 
received from time to time, in which the external surface of 
the heart was covered with layers of effused and partially 
organized fibrine. The pericardium was thickened to three 
times its natural substance, and within it was contained 
several ounces of colourless serous fluid. The effused fibrine 
hung in grape-like appendages from the base of the heart, 
each of which had a flocculent condition. These bodies were 
devoid of colour, and had altogether such an appearance as 
would lead us to doubt whether the effusions resulted from 
active inflammation. The muscular substance of the organ 
and its internal lining membrane were alike free from organic 
change. A similar specimen was, a few years since, laid by 
us before the Pathological Society, and will be found 
published in the record of its proceedings.] 
DISEASE IN THE EYES OF CATTLE. 
By W. Cox, Sen., M.R.C.V.S., Ashbourne. 
The disease I am about to describe is one that I have met 
with among cattle, more particularly young ones, during the 
last twelve years. I have seldom seen it but in the summer, 
and more frequently in the later months of the year, and 
particularly in dry hot seasons. It is very prevalent at the 
present time, and I have seen and treated no less than five 
herds of cattle for it during the last three weeks. 
By some persons it is believed to be of an epizootic cha- 
racter. I have noticed the fact, that when one animal 
becomes affected there are always several more in the herd 
