116 
COM PTE RENDU OF THE ALFORT SCHOOL 
with sinapisms, but which did not vesicate ; and the Professor prog- 
nosticated that the animal would not live over the morrow. He 
died about nine o’clock in the morning. 
He was opened at six o’clock in the evening. The stiffness of 
death still remained, but the enlargement of the throat had consi- 
derably subsided. The cellular tissue was infiltrated with a yel- 
low seriosity of the consistence of jelly and without any unpleasant 
smell. This infiltration was particularly abundant about the 
trachea, and extended on both sides of it from its commencement to 
its entrance into the chest. 
After having disarticulated the jaw, and separated the base of 
the tongue from its adhesion to the right side, and also the veil of 
the palate, it w r as evident that the subjacent cellular tissue of 
these parts w r as yet the seat of considerable infiltration. The 
mucous membrane of the pharynx, the larynx, and the depths of 
the nasal cavities presented zones of a reddish-brown colour, and 
also some ecchymoses. The left ventricle of the larynx presented 
a mass of concrete serosity as large as a nut, and still adhering to 
the mucous membrane from which it seemed to have exuded. 
The sinuses of the head w r ere likewise filled w r ith a bloody seros- 
ity, or with discoloured blood. An arborescent redness spread over 
the internal tunic of the trachea. The subjacent cellular tissue 
was also injected with blood. The redness increased as it de- 
scended the tracheal tube, and disappeared towards the division of 
the bronchi, where was some spumous mucus lightly reddened. 
The lungs and the other thoracic viscera were sound. The sto- 
mach contained a small quantity of partially digested aliment. 
The mucous membrane of the right sac, throughout its whole extent, 
w*as of a vivid red. The colour gradually diminished, and at 
length almost disappeared in the small intestine. It had more 
intensity in the caecum, in wdiich intestine w r as a quantity of gravel 
and dirt. The spleen presented numerous violet-coloured promi- 
nences, w'hich assumed this form from the blood contained in their 
parenchyma. It w r as of its natural size. The other viscera, as 
well as the brain, appeared to be healthy. 
None of the causes of this disease have yet been satisfactorily 
determined. It is one in which the blood undergoes a manifest 
change, and which therefore, by analogy, ought to have some re- 
semblance to those typhoid affections which are observed among 
the horses inhabiting the neighbourhood of some of the Brasse 
marshes. 
There is a malady very destructive to the horse, and which, in 
despite of the positive knowledge that we have of its nature and 
its seat, is still named after one of its ordinary symptoms — we mean 
vertigo, v r hich well deserves the profoundest study of the prac- 
