SCHOOL AT LYONS. 
357 
\ 
but smaller, were observed, each inclosed in a membranous 
envelope, and adhering to the chorion by a peduncle. On atten- 
tively examining the place of adhesion, there was seen distinctly 
on the external face of the sac, an opening, through which the 
hippomane might be easily made to protrude. Around this open- 
ing, and occupying a space of five or six millimetres (about the 
fifth part of an inch), the villosities of the placenta were scarcely 
perceptible, but instead there was a white areola. This disposi- 
tion of them indicates that the hippomanes ure formed between 
the uterus and the foetal membranes, and penetrate into the sac 
of the chorion in the same way that certain fibrous rounded 
bodies reach the serous cavities. 
The presence of hippomanes in the sac of the chorion of the 
mare, while in ruminants they are found only in the cavity of 
the allantois, is a circumstance favourable to the opinion of those 
anatomists who regard this latter membrane as lining the internal 
sac of the chorion of monodactyles. 
2. In the hind leg of a horse, besides the small muscle, the 
peroneo calcaneus (plantaris), another was found, slender, hav- 
ing the same direction and insertion, but taking its origin from 
the superior tendon of the femoro phalangeus (gastrocnemius 
internus). 
3. In a female hocco, from Cayenne, which had been barren 
during the four years that had elapsed since its importation, the 
ovary presented a great number of ovales, the largest of which 
were about the size of a millet-seed. The oviduct, sufficiently 
developed, communicated only with the cloaca, the mucous 
membrane of which projected over the termination of this canal. 
4. A she-goat, two years old, had wanted from its birth one of 
the hinder limbs. On examination after death, the basin of the 
pelvis, on the side on which the limb was deficient, was almost 
wasted away. The pubis alone remained incomplete, attaching 
itself to the sacrum by a ligament. On the same side — the left — 
the kidney was wanting, and there was a supernumerary rib. 
Chair of Pharmacology — M. Grognier, Professor. 
Experiments on Poisons. — Much has lately been said 
of the oxide of iron as an antidote against arsenic. In the course 
of the last year we have put it to the test on dogs ; but the re- 
sult has not been satisfactory. Shortly after the ingestion of the 
arsenious acid, we have given double the quantity of the oxide 
of iron ; but all the symptoms of poisoning by arsenic have ap- 
peared, and death has followed. We have given the poison 
and the antidote at the same time, and the animal has died as in 
the other case* 
vol. ix. 3 a 
