AND ANIMAL LIFE. 51 



tional difference in the rectum ; | of a degree in 

 the chest ; but no difference in the abdomen. 



The difference in the indications of the ther- 

 mometer in these different situations is riot to be 

 attributed to variations of temperature, but, pro- 

 bably, as Dr MILLIGAN justly observed to me, is 

 to be referred to the more or less perfect embrace 

 of the contained viscera. In the thorax the lungs 

 collapse when a thermometer is introduced, and 

 thereby prevent the bulb of the instrument from 

 being completely covered, this is not the case 

 in the abdomen and rectum. 



EXPERIMENT VII. 



In this experiment pigeons were substituted for rab- 

 bits, and are equally convenient to inflate and operate upon. 

 Temperature of the room 56 : pigeon 106 ; decapitated ; 

 spinal cord destroyed ; inflated with cold air. 



Thermo, in the Rectum. Abdomen. 



10 - losr - 107^ 



15 102i - 106 



20 - 102 - 105 



25 99 104 



30 97 102 / 



35 95 - 100 



40 94 98 



45 93 - 98$ 



50 - 9H - 97 



55 - 90i - 95f 



60 - 89 , 95 



