TOXICOLOGY. 
521 
CASE VII. 
Nov. 2St/i, 7 A.M. —I gave one ounce and half of the white 
oxide of arsenic to a small entire horse that had fasted thirty-six 
hours. The animal remained in perfect health until the 5th of 
Dec. when he was destroyed, and no morbid change worthy of 
notice had taken place. 
CASE VIII. 
Dec. 7th, 8 a.m. —I administered two ounces of arsenious acid 
to a lame horse, seven years old. I at length attained the 
object at which I had aimed—he died fifty-two hours afterwards; 
and exhibited, on dissection, all the morbid lesions caused by 
the arseniate of potash. 
CASES IX & X. 
Dec. 12th .—Thinking it possible that the death of this animal 
might be the consequence of some peculiar state of the constitu¬ 
tion, I gave two ounces each to two other horses. One, the 
oldest and poorest, died at the expiration of forty-six hours; the 
second, about eight years old, and of strong constitution, lived to 
the third day. The true morbid appearances of poisoning were 
found in both. 
CASE XI. 
From these three facts, I thought that I was justified in con¬ 
cluding that a dose of two ounces of the arsenious acid would 
poison a horse; and then I attempted to discover the power and 
proper dose of the antidote. Dec. 16th, 1 gave to a gelding 
nine years old, two ounces of the arsenious acid, and imme¬ 
diately afterwards four pounds of the hydrate of the peroxide of 
iron, in about eight quarts of water. Neither the poison nor the 
antidote produced any apparent effect upon this animal, who pre¬ 
served every appearance of health until the 25th of December, 
nine days after the administration of the drugs ; he was then de¬ 
stroyed. On examination after death, there appeared a deep 
erosion in the left sac of the stomach, of the size of a three-franc 
piece. A lesion of the same nature, of a rounded, lenticular form, 
was found in the right sac. 
CASE XII. 
Dec. ISth .—On the same day I had given the same quantity 
of the poison and the antidote to a gray horse, seven years old, 
who lived until the 28th, without the least sign of illness. He 
was then destroyed. On examining the carcass with the most 
scrupulous attention, the only lesion that could be found was a 
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