146 
COMPTE-HENDU OF THE 
period of the disease with violent disorders of the animal func- 
tions. The patient moved in a forward direction as in vertiginous 
affections ; he then threw himself violently on the ground, and tore 
his flanks with his teeth. There was evidently violent inflam- 
mation of the cerebral organs. The examination after death, 
however, only presented the lesions of acute pneumonia occupy- 
ing a portion of both lungs. 
The second Case has relation to a horse that was conducted to 
to the school in order to undergo medical treatment for a malady 
that announced itself with all the most pathognomonic exterior 
characters of acute pneumonia, such as irregular and rapid move- 
ments of the flanks — plaintive respiration — injection of the con- 
junctiva of a yellowish red — and pulse full and strong. All these 
symptoms existed ; and attentive auscultation discovered a re- 
spiratory sound, strong, and to be heard through the whole ex- 
tent of the thorax. The resonance was strong on each side, and 
through the whole extent of the parietes. This absence of the 
symptoms ordinarily so decisive, that furnish the auscultation 
in acute inflammation of the lungs, invalidates the diagnostic 
which seems to characterize the whole of the exterior signs, 
especially as the animal which forms the subject of this ac- 
count was affected with so much weakness of the posterior limbs, 
that we almost believed that paraplegia was beginning to com- 
mence. 
The horse died, and we observed on its dissection that the 
middle lobe and internal surface of the right lung were the seat 
of violent inflammation, and had already become gangrenous. 
In every other part the substance of the lungs was perfectly 
sound. 
Third Case . — A horse, much advanced in age, was brought to 
the school. He had been ill eight days, and abandoned, at his 
entrance, by reason of his little worth. He presented every 
exterior symptomatic appearance that announces acute pneu- 
monia. In this case, also, the auscultation puzzled us, and 
made us hesitate in our diagnosis. 
The pulmonary sound was very plainly heard through the 
whole extent of the left lung ; and, in its normal state, through 
the whole extent of the right lung. 
At the post-mortem examination of this horse, the left lung 
was perfectly sound, and that of the right lung was so completely 
and perfectly hepatized from the superior to the anterior lobe 
to the surface of the diaphragm, that there did not exist more 
than one permeable vesicle. 
This result, wholly unexpected, would have made us doubt 
the accuracy of our observation, if, on the morning of the death 
