AND PERSONALITY 



amount of oxidation to maintain the temperature of its 

 body at 98.6. We therefore expected to find a larger brain 

 and a larger thyroid gland in the walrus than in the hippo- 

 potamus. We also expected to find in the walrus a larger 

 volume of blood and a larger heart than in the hippopota- 

 mus. The weight of the brain and the weight of the heart 

 are accurate criteria of the metabolism of these two 

 animals. 



77 



