AND PERSONALITY 



is not acute, and the sense of sight, although not so keen as 

 in the eagle or the antelope, has a large capacity for con- 

 tinuous work. The optic mechanism, including the cerebral 



Crocodile 

 15.60 grams. 



Thomson's gazelle 

 90.8 grams. 



African buffalo 

 540 grams. 



Tiger shark 

 107.5 grams. 



Sting ray 

 126.4 grams. 



FIG. 9. Comparison of brain weights. 



representation in the brain of man, is therefore relatively 

 greater than that of any other animal. 



The following table shows the body-weight-to-eye ratios 

 and the brain-to-eye ratios in seven animals of comparable 

 weight representing seven species: 



97 



