A STUDY IN MORBID AND NORMAL IMIYSIOLOGY. 87 



is published I am unable to say, but liis results and conclusions, as quoted without 

 reference, by lledard (^Archives Gciierales, 6* Serie, t. xix. p. ;i5), are as follows: — 



1. Intense pain transmitted by spinal nerves and the skin causes a rapid fall of 

 temperature, which in the rabbit amounts to from 0°.68 C. to 2°.4:8 C. ; the mean 

 being l°.27 C. (= 2°.29 F.) 



2. The temperature falls perceptibly during the first uiinute, and arrives at its 

 maximum in from ten to twelve minutes. 



3. The lowered temperature may last for an hour and a half. 



4. The fall is most marked when the pain does not give origin to muscular 

 spasms. 



5. The same phenomena occur in man. 



6. The grave abatement of temperature produced by a pain lasting ten minutes 

 would appear to be dependent upon an alteration of the chemical actions of the 

 body, and not merely to an indirect influence exerted upon tlie vaso-motor nerves. 



In order to clearly determine the truth concerning tlie influence of irritation 

 upon a sensitive nerve, I have performed a number of experiments, some of which 

 are repetitions of those of earlier observers. The records of these experiments 

 are as follows : — 



Experiment 64. 



A young pup Crural and a.\illary nerves f.\po.'<ed, and tlicrmometiT placed in ppi'itoiieal cavity. 



REJIAEKS. 



