AND ANIMAL LIFE. 131 



In the following experiments, instead of bring- 

 ing the rabbits from the room in which they 

 were kept, I confined them in a box, in the same 

 situation, for two hours ; and the results were as 

 follow : 



Temperature of air in room 43. 



Temp. Rabbits Temp. Rabbits 



The temperature of the box, in both instances, 

 was 67. In the first experiment, the rabbits 

 that were two months old indicated a rise of four 

 and five degrees in the short space of two hours ; 

 but in the second, in which rabbits of three 

 months old were employed, we observe that the 

 influence of the increased temperature produced 

 less decided effects, because they possess, at this 

 age, a constitution approaching to that of adults. 



CXXXIX, It is stated by Dr EDWARDS, that 

 young rabbits of twelve or fifteen days old, " se 

 soutienne a peu-pres egale a celle des adultes, 

 au-dessus d'une temperature exterieure moy- 



i 2 



