439 



It is almost unnecessary to state that, in measuring the changes of 

 temperature taking place in different parts of an organ such as the 

 hand, two points as nearly homologous as possible in temperature 

 must be chosen. On the hand the intervals between the index and 

 middle finger and that between the annular and little finger are 

 found to present as nearly as possible the same temperature in the 

 normal state. 



As thermometric measurements admit of far greater accuracy of 

 expression than those relating to sensibility and muscular action, but 

 at the same time any general or average results require to be founded 

 on a much greater number of observations to be entitled to value, I 

 have thought it preferable, until such have been obtained, to state the 

 numerical thermometric results of a few separate observations. 



Observation 1st. 



a 



Temperature of room 19 Cent. 



of mouth 36 



of palm of hand when shut (before 



experiment) 35' 7 



Temperature between index and median fingers. . 35*7 



annular and little fingers 



of both hands 357 



After the uncovering of the arm, and the application of ice to the 



right elbow : 



Right Hand. 



Temperature between last fingers 3 2- 2 



index and median 32'7 



Left Hand. 



Temperature between last fingers 34*3 



,, ,, index and median 34*0 



After the lapse of nearly an hour, when the little finger had become 

 nearly paralysed and insensible, the temperature was found to be 



Between last fingers of right hand 34 '7 



left hand S4'7 



From this point, as the paralysis gradually became complete, the 

 temperature over the hypothenar eminence, the inner side of the 



