jETHER vapour. 
383 
rality of the farmers being too poor to keep the breeding mare in 
idleness, she is put to work very soon after parturition has taken 
place, frequently being driven fifteen or twenty miles, with the foal 
all the time running by her side. 
You shall hear from me again soon. 
Your’s most truly. 
AETHER VAPOUR SUCCESSFULLY ADMINISTERED 
PER RECTUM. 
By Dr, PEROGOF, of St. Petersburgh. 
Translated from the Russian by Mr. CHARLES S. ROMANIS, 
Veterinary College , Edinburgh. 
Dr. Perogof, by experiments with sulphuric ether on the lower 
animals, has shewn that the introduction of the vapour of ether 
into the rectum is a surer, quicker, and more easy way of pro- 
ducing insensibility to pain than by the usual way of inhaling it. 
Dr. P. states that two ounces of sulphuric aether, introduced into 
the rectum in the form of vapour, produces in five minutes a 
greater influence on the body than six ounces introduced by pul- 
monary absorption into the system, though continued for ten, fif- 
teen, or even twenty minutes. 
In ten cases, when Dr. P. had an opportunity of trying the 
effects on the human body, it succeeded entirely to his satis- 
faction. 
The following are a few of the cases in which he tried it : — 
1st. A female, aged seventy years, having had for more than 
twenty years a fatty tumour on her back, of two feet in circum- 
ference, was mtherized. She became insensible in five minutes. 
The tumour was then removed without any evidence of pain ; and 
for some time after the operation she would not believe it had been 
removed. 
2d. Was a case of parturition. The child was extracted by the 
forceps, alive, and did well. The operation occupied ten minutes. 
3d. Was a person labouring under calculus in the urethra. 
The stone was in a few minutes extracted. 
4th. A female patient had been a few weeks before inhaling 
the vapour, without any effect being produced, notwithstanding 
she had, in the space of a quarter of an hour, inhaled the vapour 
produced by four ounces of sether. This person was rendered 
quite insensible with only two ounces introduced per rectum. 
