AND ANIMAL LIFE. 39 



cold air for inflation, I contrived a small machine 

 which enabled me to use warm air, and, at the 

 same time, allowed me to ascertain its tempera- 

 ture whenever I noted that of the animal. It 

 is manifest that the air we inspire is warmed in 

 its passage to the lungs, and, therefore, it is im- 

 perative to imitate, as nearly as possible, the 

 operations of nature. As this instrument may 

 be useful to others engaged in the same pursuits, 

 I have given a description of it in the Ap- 

 pendix, to which I refer the reader. The follow- 

 ing experiment was performed with cold air. 

 The temperature of the room at the commence- 

 ment was 43, and of each rabbit 104. The 

 colour of the first rabbit was black and white. 

 It was decapitated and inflated. In all the ex- 

 periments, the rabbits were killed simultaneous- 

 ly, and the different processes attended to at the 

 same moment. " 



EXPERIMENT I. 



Time Minutes, Thermo, in the Rectum. 



5 !"'<*'' 102 



10 u \. 101 



15 - 100 



20 9^ 



25 - 961 



30 - 95* 



35 - 93* 



40 . 92* 



45 - 91* 



50 ^. x 90 



60 - 88* 



