75 



In more than twenty experiments, I only once found an 

 increase in the temperature of the leg of a guinea-pig, after the 

 section of the sciatic nerve. This increase lasted about two 

 or three days after the operation, and it was of two degrees Fahr. 



After a complete transversal section of the spinal cord in the 

 lumbar region, in birds and mammals, I found, repeatedly, 

 an increase of one, two or three degrees Fahr. in the temperature 

 of the paralyzed parts. I ascertained that it is not in conse- 

 quence of an increase of the general temperature of the animal 

 that such an increase exists. It is to be found only in the 

 paralyzed parts. 



I never found any increase of temperature after a complete 

 transversal section of the spinal cord, either in the cervical or in 

 the dorsal region. 



After a section of a lateral half of the spinal cord, at the 

 level of one of the three or four last dorsal vertebrae, I have 

 almost constantly found an increase in the temperature of 

 the posterior limb on the side of the section. The elevation 

 varied from one to four degrees Fahr. On the contrary, there 

 was a diminution of from one to five degrees Fabr. in the 

 temperature of the other leg. In some cases, in consequence of 

 the increase of temperature on one side and its diminution on 

 the other side, I found a difference of six or seven degrees 

 Fahr. in the temperature of the two limbs. It is very remark- 

 able that, together with the increase of temperature in one 

 limb, there is an augmentation of sensibility, and with the di- 

 minution of temperature in the other limb, there is also a dimi- 

 nution of sensibility. 



Sinca the publication of the results of my experiments on the 

 sympathetic nerve, I have performed them many other times, 

 and I have found that the result is not so constant as Dr. A. 

 Barnard and myself had admitted. In some rabbits there was 

 no decided increase in the vascularization and in the tempe- 

 rature of the face. I ought to say that, in these cases, the two 

 ears were already warm, and very vascular before the operation. 

 I have found, also, that generally in very cold weather the ex- 

 tremity of the ear of rabbits, on the side of the section of the 

 sympathetic nerve, remains cold. 



From my experiments and from the observations and experi- 



