336 Proceedings of the Royal Society of Edinburgh. [Sess. 
The drug was next given concurrently with the ether, and in every 
experiment the fall of temperature characteristic of the anaesthetic was 
observed. The rate of the fall of the temperature was not retarded by the 
drug being injected. In one experiment, it may be noted, in which the 
ether was not given in sufficient amount to keep the animal fully paralysed, 
and where muscular action as of running and chewing continued, the rate 
of the fall of temperature was retarded, being only about *5° C. in the first 
hour. The only difference between those experiments when the drug was 
present and those when it was absent was that the anaesthetic plus the 
drug did not so markedly lower the temperature as when the anaesthetic 
was given alone. Further, there was a tendency on the part of the tempera- 
ture, after the animal recovered from the influence of the anaesthetic plus 
the drug, to reach a higher level than the normal temperature of the animal 
before the experiment commenced (see Chart V.). 
