EFFECTS OF THE INHALATION OF /ETHER ON ANIMALS. 147 
during which time I unnerved one fore leg, the limbs all being un- 
restrained. At the moment of division of the nerve there was a 
slight twitch of the limb, but no more. And not the least incon- 
venience resulted from the inhalation.” 
Experiment III, was on an older ass. “/Etherization was pro- 
duced in five minutes, when the animal fell with great violence, 
and struggled for a few seconds ; then became quiet and insen- 
sible, and continued so for five minutes. In this state I performed 
the operation of nicking by two incisions. A medical friend being 
present, the knife was handed over to him, and he made a deep 
incision into the muscles upon the outside of the thigh. Both 
operations were unattended by the least expression of pain, or by 
movement, in fact, of any kind. In fifteen minutes afterwards the 
donkey partook freely of bran mash, appearing nowise the worse 
for what had been done to it. The pulse in each experiment 
was found but slightly increased. The respiration was retarded.” 
Experiment IV . — “ A two-year-old thorough bred filly was 
submitted to the influence of aether, and affected by it in four 
minutes, when it fell powerless, in an easy manner, down upon the 
bed spread underneath it. It continued in the comatose state in 
which it had been thrown by the aether twenty-nine minutes, 
during which space of time I unnerved both fore legs, without 
confinement being used, and without, on the part of the animal, the 
slightest evidence of pain or sensibility, notwithstanding I repeat- 
edly during the time squeezed the nervous cords. The inhaling 
apparatus being removed, the animal in a few seconds revived, 
raised her head, and began neighing. In fifteen minutes sensibility 
was restored, and she then got up by herself, and walked with a 
cautious step to her manger.” 
EXPERIMENT V. — “An ass, intended to be castrated, was made 
to breathe the aetheral fumes, and by them, being in three minutes 
and a half rendered powerless, gently fell to the ground. A minute 
afterwards, the animal, perfectly insensible, lying upon its off side, 
was submitted to the operation of castration. An assistant raising 
the hind leg, in order to afford me an easier grasp of the testicle, 
I performed castration in the usual manner, with the caustic clams, 
doing every thing with as much facility as though I had been ope- 
rating on a dead subject. The animal was kept under the in- 
fluence of the aether for fifteen minutes, when the apparatus was 
removed, and it was fifteen minutes afterwards before sensation 
returned, there being no untoward result whatever.” 
Both of the animals last operated upon are doing well. In 
none of the subjects that have been operated on has there been 
any haemorrhage. Mr. Barrow concludes this interesting account of 
his experiments by remarking, that he “ entertains sanguine hopes, 
