198 
REMARKS ON THE EFFECTS OF AETHER. 
ounces of aether were put into the receiver. In two and a half 
minutes the animal fell, but not until he had turned about many 
times, partially falling and staggering up again, and throwing him- 
self about most furiously, and at last falling with a crash, so as to 
induce fears that some mischief must ensue. The breathing was 
tremendously increased, and every muscle connected with respira- 
tion in intense action. The effect of the aether was kept up as 
well as could be managed ; for in falling one of the receptacles was 
torn off, and the opening was obliged to be closed by the hand ; 
but sufficient effect was produced for the animal to keep the limbs 
tolerably still for about half a minute, and upon being pricked with 
a sharp instrument, he did not shew any sign of sensation. Upon 
rising, he reeled and staggered about for a few minutes, and 
on this subsiding, the experiment did not appear to be attended 
with any bad effects. 
Experiment III. — A black horse, of medium size, was put 
under the influence of the vapour. The apparatus (a new one) 
was, when adjusted, charged with twelve ounces of aether, which 
almost immediately produced a marked effect — heaving of the 
flanks, staring of the eyes, loud and labourious breathing, a con- 
stant shuffling as if about to fall, reeling, staggering, partially 
falling, and at last falling with violence : this occupied seven 
minutes. When down, a series of the most violent struggles 
commenced. It did not appear that the aether had the effect of 
stopping them, as the charged apparatus was not removed for 
three or four minutes after falling. The experiment lasted fifteen 
minutes, and the recovery, occupying about five minutes longer, 
was the same as in Experiment No. II. 
In each of these three cases it was pretty clear that the appa- 
ratus was not sufficiently perfect to exclude atmospheric air ; and 
it was presumed that the common air, being mixed with the 
setherised vapour, produced these violent symptoms. 
Experiment IV.- — After an interval of forty-eight hours, the 
same animal as in the last instance was again put under the 
aetherial influence. The apparatus now employed was rendered 
as perfect as could be, to exclude atmospheric air. 
No bad symptoms manifesting themselves on the animal being 
closely examined; the apparatus was adjusted, and carefully 
inspected to see that nothing that could in any way interfere with 
the success of the experiment existed. Being satisfied on this 
point, the receptacle was charged with ten ounces of aether. The 
same sympoms as before were evinced ; but in one minute and a 
half the horse fell, as in the former instance, with violence. A good 
straw bed had been prepared, and guide ropes were attached to 
the head, in order to prevent the danger so much to be dreaded 
