SYMPTOMATIC DISEASE OF THE BltAIN. 449 
breaking up ; and another abscess would doubtless have been 
the consequence had the animal survived a little longer. In 
other parts of the substance of the lung a similar condition 
was observed, but not to so great an extent. Considerable 
adhesion had likewise taken place between the pleurae 
pulmonalis and costalis, and more especially on their superior 
aspects. 
The heart and large vessels w r ere healthy, as was also the 
left lung. 
The disease affecting these lambs is evidently pleuro- 
pneumonia ; but there are important pathological differences 
between this malady in cattle and the one under consideration. 
SYMPTOMATIC DISEASE OF THE BRAIN IN 
CATTLE. 
By H. Flower, Jun., Derby. 
Thinking that a short description of a disease affecting 
the cattle in our neighbourhood, in the months of May and 
June last, might possibly be interesting to your readers, I 
have ventured to send you a few of the particulars ; and 
especially as I have recently had some fresh cases of the 
disease brought under my notice. 
The first symptoms which are usually observed are dul- 
ness, loss of appetite, staring of the coat and, if the animal 
be a milking cow, a great diminution in the quantity of the 
milk. There is generally a cessation of the alvine evacuations, 
which is shortly succeeded by a death-like coldness of the 
extremities. The animal soon becomes comatose, and grinds 
its teeth incessantly. The respiration is at first tranquil, and 
the pulse slow but full. The patients will frequently be 
seized with a kind of epileptic fit, which lasts but for a few 
minutes, during which time some of them will exhibit the most 
violent symptoms, such as bellowing hideously, pawing the 
earth, and running at anything within their reach : they will 
also break out into profuse perspiration, and press their 
heads forcibly against the wall, even to such an extent as to 
break off their horns. Many are seized with violent trem- 
blings and twitchings ; and towards the latter period of the 
disease the respiration becomes extremely laborious, the jaws 
are firmly closed, convulsions succeed each other rapidly, 
and death shortly closes the scene. 
XXIX. 
58 
