1(30 
THE VETERINARY SCHOOL 
dently the share which the deuto-ioduret of mercury has in the 
affair. When the mixture is given, the potassium, but not the 
mercury, can be recognized in the urine. 
Chair of Anatomy. 
M. Rigot, who during the last year announced the existence 
of a muscular membrane or coat beneath the mucous membrane 
of the bronchi, and the immediate effect of which ought to be 
the subsidence or contraction of the lungs, is now enabled to 
announce, that the greater part of the nervous branches ema- 
nating from the bronchial plexus supply these muscles. A simi- 
lar distribution of the pulmonary nerves w T ell explains, accord- 
ing to M. Rigot, the phenomena of suffocation, which are 
observed after the division of the pneumo-gastric nerves, and 
which are evidently nothing more than paralysis of the motor 
portion of the lung. 
In pursuing these researches, the Professor has often observed 
an obliteration of many of the divisions of the pulmonary artery, 
caused by grey fibrinous concretions, similar to those which are 
found in old aneurisms. The existence of these fibrinous depots 
always coincides with certain organic changes in the lungs, as 
induration, tubercles, grey hepatization, or simply with an em- 
physematous state of the lungs. 
M. Rigot has also discovered some small ganglions, variable 
in their number and position, in the substance of the sciatic 
nerves. These bodies, which are placed at the point of junction 
and departure of a multitude of minute filaments, do they be- 
long to the cerebro-spinal, or rather to the ganglionic system ? 
Chair of Chemistry, Physics, and Pharmacy. 
Of all the mercurial compounds, medicinal and venemous, 
corrosive sublimate is, without contradiction, the most active. 
Chemists, by discovering that it produces with albumen an in- 
soluble compound, have presented a means of precipitating and 
rendering it harmless ; and, thanks to M. Orfila, who was the 
first to discover this, we possess a certain antidote against this 
mineral poison. If some assured facts have made chemists and 
medical men recognize in albumen and in the substances which 
