194 COM PTE RENDU OF THE SCHOOL AT LYONS, 
tuation is always obscure, and it requires some degree of courage 
to pierce through the fleshy mass, in order to arrive at the reser- 
voir beneath. After the evacuation of the pus, the index finger 
may traverse a very large space, bounded at the bottom by the 
periosteum. We may reckon that from that moment the jaw will 
recover a little of its natural motion ; the animal will more readily 
take his food, and, by degrees, recover his condition, and return to 
his work. The drivers of these animals trace this phlegmon to the 
blows which they occasionally receive on the cheek. May not 
exposure to rain, and cold and humid air, be at least occasional 
causes of it? 
A horse, from an old stallion and a mare farcied and glandered 
to the utmost degree, and who has passed six years at our school 
among all the glandered and farcied horses that came to us, had no 
ailment during the first five years ; but now has some farcy tumours 
on the neck. At three years old he had ophthalmia, and became 
blind in one eye. The other eye was, soon afterwards, affected, 
and has had numerous periodical attacks. It, at length, became 
totally blind, and (fye!) was sold for fifty francs. 
Anatomy. 
W e have continued our researches on the appendices of the foetus, 
and have especially studied the umbilical vesicle in the solipede. 
This organ, which we found in the foetus of an ass three months 
advanced in gestation, was situated in a species of infundibulum 
between the base of the chorion and the chorial expansion of the 
allantois. It was of an elongated pear-like form, the base of which 
adhered to the chorion, forming a species of matrix. At the point 
it was prolonged towards the foetus, and terminated insensibly some 
lines between the amnios and the amniotic membrane of the allan- 
tois, without any communication with the intestine. It received, 
towards its extremity, two omphelo-mesenteric vessels, which en- 
tered and ramified through its walls, almost completely vascular. 
In this foetus, the adherent point of the chorion presented, in its 
centre, an opening with fringed and green borders, and which 
formed a communication between the cavity of the vesicle and the 
internal membrane of the uterus. There was not any fluid in the 
vesicle. 
In the foetus of seven or eight months utero- gestation in a mare, 
we found the same organ in a similar position ; but the interior 
cavity had disappeared, and the vesicle formed nothing more than 
a cord, very vascular, adhering, through its whole length, to one of 
the sides of the infundibulum, and, by its most external extremity, 
united to the chorion by a kind of cicatrix, less apparent than in a 
younger foetus, and without any opening. 
