REVIEW. 
538 
The case adverted to by Mr. Percivall is the following: 
“ On the 5th September, 1824, a young bay mare belong 
ing to the artillery was admitted into the infirmary with 
symptoms of colic, for which she had to loseviij lbs. of blood 
before she came in. Her symptoms were of the most violent 
description. She sweated profusely from paroxysms of 
agonising pain, w T orked hard and quick at the flanks, and 
had a thready and almost imperceptible pulse. The follow¬ 
ing drink was prescribed to be given immediately:—Tinct. 
Opii et Ol. Terebinth. aa 3bj ; Decoct. Aloes, ^vj. M. In the 
course of half an hour this was repeated; but shortly after, 
she vomited the greater part of it by the mouth and nostrils. 
No relief having been obtained, xij lbs. of blood were taken 
from her, and this drink given, viz., Tinct. Opii, ^iv; Decoct. 
Aloes, Jxij ; Ol. Carui, Jss. M.; and a stimulating embro¬ 
cation rubbed upon the belly, and large and frequent clysters 
injected. In another hour this drink was repeated; and 
again, for the fourth time, during the succeeding hour; 
both of which (last drinks) she rejected as she had done 
the second one. Notwithstanding active measures were 
promptly taken, she died three hours after her admission. 
Having opened her, we found the stomach prodigiously dis¬ 
tended with air: it was at least three times its ordinary size. 
When punctured, it subsided to about two thirds of its 
former bulk. It contained masticated oats and hay, swim¬ 
ming in a greenish-yellow fluid, which emitted an offensive 
odour. Had we suspected the presence of air, we should 
have attempted to have introduced a flexible hollow tube into 
the stomach.” 
From this it would appear, that even with all the power of 
white hellebore —certainly the most potent agent, as simulating 
emetic operation, we possess, so far as horses are the subjects— 
we are not able to produce actual emesis at will: if it occur, 
which now and then it will, still is it to be regarded rather 
as an accidental effect of the medicine than as a natural or 
positive one. Shall we, hovrever, for this reason, denounce 
the horse as an animal wanting susceptibility to emetic 
action ? Before w T e come to this conclusion, let us extend our 
inquiry a little farther into facts: let us first review those 
standing on record in our own annals. 
Case i of “vomition,” recorded in “The Veterina¬ 
rian,” in vol. hi, (1830,) is related by Mr. Baker, of Sud- 
