VETERINARY SCHOOL AT LYONS. 115 
preceding in producing the development of this disease, and 
serve as an occasional cause of it. These are, the hard work 
which is exacted from the horse in the spring, and the use of new 
fodder, with which they are abundantly furnished. One of these 
exciting causes acting on the locomotive muscles, the other on 
the digestive organs, and part of the evil which occurs to the 
cerebral system soon afterwards is doubtless attributable to these 
two exciting causes. 
The examinations of the carcasses of the animals that died of 
this disease have furnished us with the following remarks :—In 
nine, that is in one half of them, the stomach was choked up with 
undigested food, amid which oats and bran appeared to predo¬ 
minate. In the other half the mucous membrane of the stomach 
was very red in the right sac. This redness was of a dull leaden 
colour in most of them, and the mucus secreted was very abun¬ 
dant. In one subject only we observed several erosions spread¬ 
ing on the portion of the mucous membrane covered by the thick 
epithelium derived from the oesophagus ; violet-coloured patches 
were perceptible in another. 
Nearly all the carcasses of these animals exhibited traces of 
acute inflammation, and more frequently of chronic inflamma¬ 
tion of the mucous membrane of the intestines. Watery effusions 
occurred in the cavity of the peritoneal bag in two instances, and 
once only in the cavity of the abdomen. 
In all these subjects the sinuses and superficial vessels of the 
brain were very much gorged with blood. In three-fourths of 
them the effusion took place in the larger ventricles; in half of 
them there was concrete albuminous infliltration in the plexus 
choroides. In two animals only the cerebral substance appeared 
to have become softened in parts corresponding to the tubercula 
quadrigemina. 
With regard to the treatment which has been pursued, it was 
thought right to vary it according to the condition of the patient, 
the circumstances of the disease, and the state of the atmo¬ 
sphere. In old horses worn out with work, and in whom muscu¬ 
lar power was nearly exhausted, and nervous irritability exces¬ 
sively developed, it was deemed prudent to confine ourselves to 
