52-2 
TOXICOLOGY. 
I 
slight inflammation about the middle of the small intestines, and n 
which certainly would have soon disappeared. The success of j 
the experiment in both these cases was complete. 
CASE XIII. 
Dec. 26th. —I gave to an old roan horse two ounces of the i 
arsenic, and at the same time thirty-two times the quantity of • 
the hydrated peroxide of iron. He took the poiton well; ^ 
but it was with difficulty that we could get him to swallow the 
antidote, and in spite of every care a part of it entered the trachea. 
It produced a frequent and somewhat violent cough, which con- i 
tinned many hours, and which appeared to fatigue the animal, 
although he preserved his ordinary spirit and appetite : but on 
the morrow there were evident symptoms of pneumonia, seem- ; 
ingly confined to the right lung. I endeavoured to combat this i 
affection by the usual means, but on the 30th he died, without i 
exhibiting the least sign of poison. 
He was opened almost immediately, and the stomach and . 
intestines were in a healthy state, with the exception that the i 
matter contained in the colon and caecum tinged the lining mem- i 
brane of those intestines of a black colour, which was doubtless \ 
the effect of the antidote. The left lung was sound, but the i 
right contained at its base two enormous vomicae, and at its i| 
edge a great quantity of tubercles in a state of softening. The i 
rest of its substance offered the appearance of recent acute in- : 
flammation, leading on to gangrene. 
Although the animal died on the fourth day after taking the i 
poison, the result of the experiment is altogether in favour of i 
the antidote, since neither the stomach, nor intestines, nor the i 
heart presented any of those lesions which arsenic invariably I 
produces. The death was doubtless caused by an acute inflam¬ 
mation of the chest, occasioned by the introduction of the hydrate 1 
into the bronchi, supervening on an old affection of the same 
organ. 
CASE XIV. 
Dec. 20th. —I gave to an entire grey horse, old but healthy, 
two ounces of white arsenic, and thirty-two times the quantity 
of the hydrated peroxide. He continued until the 8th of January 
apparently in good health. He was then destroyed, and 
examined in the presence of the members of the Academy. There 
was a small quantity of citron-coloured effusion in the abdomen, 
and a false membrane of recentformation united the sus-sternale 
portion of the colon—that lying on the sternum—to the dia¬ 
phragm. The left sac of the stomach was sound, but the 
