POISONING BV THE ARSENIATE OF POTASH. 447 
niosis ill various places, as large as a franc : the sub-mucous 
tissue was injected, and that injection extended to the muscular 
coat. The small intestines contained a great quantity of milky 
fluid, but no other sensible lesion. It was the same in the 
CJECum. The mucous membrane of the colon, on the contrary, 
was of a deep red through its whole extent; and this intestine 
contained a very thin fluid. The bladder contained a great 
quantity of highly-coloured fluid, w'hich was also preserved: the 
mucous membrane of the bladder was highly injected. The 
lungs were sound, the heart of its ordinary size, and its ven¬ 
tricles were filled with fibrinous clots. The right ventricle and 
the auricle offered no lesions; the left ventricle presented a 
great number of ecchymoses, of a pyramidal form, which ex¬ 
tended from its base to its point. The vessels of the membranes 
of the brain were highly injected. There were several ecchy¬ 
moses on the arachnoid membrane. The substance of the brain 
offered no sensible change. The vertebral canal was not opened. 
The fluids contained in the stomach and bladder were sub¬ 
mitted to strict analysis, but not the slightest trace of poison 
could be discovered. 
2. Likewise an entire horse, died 14 hours after taking the 
poison. The stomach was distended by a great quantity of 
indurated food; and the peritoneal membrane of this viscus was 
torn at its greater curvature nearly three inches in length. The 
mucous membrane of the right curvature was red, and injected 
in in a few places; and this was the case with the lining mem¬ 
brane of the small intestines and caecum. The diaphragm was 
ruptured in its muscular portion, near the xiphoid cartilage. 
There was no effusion of blood either in the chest or abdomen : 
it is therefore probable that the rupture took place at the mo¬ 
ment of death, and that this animal was not only poisoned, but 
laboured under an evident attack of indip’estion. The luno-s 
O O 
were sound; but here, also, there w ere numerous ecchymoses 
in the left ventricle of the heart, extending from the auriculo- 
ventricular orifice to the point of that viscus. 
3. A gelding; died 15 hours after taking the poison. There 
was evident inflammation on the internal surface of the right 
curvature of the stomach, and on the mucous membrane of the 
colon. The small intestines and the caecum w^ere sound ; the 
bladder was injected ; the left ventricle of the heart was studded 
with ecchymoses, and there were fibrinous clots in its cavity, and 
in the ])osterior aorta. 
4. A gelding ; died 17 hours after taking the poison. There 
was redness and thickening of the mucous membrane of the 
alimentary canal, fiom the right curvature of tlie stomach to the 
