250 
G. A.RCHIE STOCKWELL. 
1. The cerebrum : 
2. The cerebellum : 
3. The sensory centres of the spinal cord : 
4. The motor centres of the spinal cord : 
5. The sensory centres of the medulla oblongata: * 
6. The motor centres of the medulla oblongata: 
Thus it will be observed, that if the drug be pushed to its 
utmost limits, the animal in consecutive order will lose : 
1. Local sensibility of extreme parts and the control of 
certain muscles there situated : 
2. Intellectual power; 
3. The power of co-ordinative movement, and of the loco¬ 
motor organs generally : 
4. The ability to perceive sensory impressions, even in 
localities in immediate proximity to the spinal centres, which 
should be the utmost limit where the conservation of life is 
desired: 
5. The power of respiring : 
6. The movements of vegetative life, to wit , of the heart, 
intestines, etc. 
Just here permit me to recall again one of the conclusions 
formulated by the second Hyderabad Chloroform Commis¬ 
sion, in paragraphs 45 and 46, of the report as published in 
The Lancet of London.* 
The experiments with ether show that it is impossible to 
procure anaesthesia with this agent, unless some form of in¬ 
haler is used which thoroughly excludes the air. If surgeons 
choose to be content with a condition of semi-anaesthesia, it 
can, no doubt, be produced with perfect safety * * * by ether 
held rather closely to the mouth * * *. If more perfect 
anaesthesia is required, it can be procured by excluding the 
air more ridigly, but then there is exactly the same danger as 
from giving chloroform ! 
This certainly admits of but one interpretation, viz., that 
where perfect anaesthesia is to be desired, the action of ether 
and chloroform is every way identical; at the same time is 
implied —which will be news to most surgeons and anaesthe- 
* January 18th, 1890. 
