40 THE TONER LECTURES. 



Time. Temp. Remarks. 



11.40 104^0 



11.45 104 Strong current applied to femoral nerve. 



11.47 104 Current broken. 



11.50 104 



11.55 103^ 



12 103 



12.5 102| 



12.7 102^ Current reapplied. 



12.8 102| Current broken. 

 12.12 102| 



12.16 102| 



12.20 102 



12.45 Thermometer retransferred to the 



rectum. 

 12.47 102 Cat killed. 



It is proper to state at this place that both of the last two 

 series of my experiments have yielded seemingly different re- 

 sults from similar experiments made by R. Heidenhain. 

 (PJiuger^s Archiv, Bd. iii. p. 510.) That observer states that 

 in a number of instances he has found that irritation of a 

 sensitive nerve, after separation of the pons from the 

 medulla, is followed by a fall of temperature. On examin- 

 ing the record of the single experiment, I find, however, that 

 the fall took place solely during the application of the galvan- 

 ism to the nerve, and amounted at such times onl}'- from .05 to 

 .1 of a degree (C). Indeed, throughout the experiment, the 

 temperature really rose, so that at the end it was decidedly 

 higher during the periods of nerve excitement than it was 

 before the nerve had been irritated at all ; and at the close, 

 when the nerve was not stimulated, the bodily heat was .2 C. 

 higher than at first. This very slight fall of temperature, 

 occurring during the period of stimulation, is something very 

 different from the profound fall which occurs some time after 

 the stimulation, and of which I have been speaking all through 

 the evening. This slight, evanescent alteration of temperature 

 is very probably due to alterations in the respiration or circula- 



