ANIMAL HEAT. 115 



rapidly than the dead animals, the difference 

 between them, however, being less than in rny 

 former experiments, probably in consequence of 

 their having been carried on in a close vessel, 

 and not in the open air. 



It has also been seen that in some of the ex- 

 periments made by M. Le Gallois with decapi- 

 tated animals, and described in his first memoir, 

 the animal respiring artificially cooled more 

 rapidly, and in others more slowly, than the 

 dead animal, while in others there was no ap- 

 preciable difference in this respect between them. 

 But in those described in his last memoir, and 

 made with my apparatus, the dead animal always 

 cooled more slowly than the other, the difference 

 varying from as little as O3 centigrade to as 

 much as 2*3 centigrade (that is, from a little 

 more than half a degree to about 4 degrees of 

 Fahrenheit), in half an hour. 



It certainly may be that the discrepancy in 

 this respect between these last-mentioned experi- 

 ments on the one hand, and my own and some 

 of M. Le Gallois's earlier experiments on the 

 other hand, may have arisen from the cause 

 pointed out by Dr. Philip, namely, the greater or 

 less degree in which the lungs were inflated. It 

 seems to me, however, that it admits of another 

 and a more probable explanation. 



In fact, M. Le Gallois's last experiments were 

 not an exact repetition either of my experiments, 

 or of his own former experiments. In some of 

 them the spinal chord was divided, and the brain 



i 2 



