30 THE EVOLUTIONIST AT 1 



darted rapidly and accurately at flies on the 

 wing. When we recollect that even so late 

 an acquisition as articulate speech in human 

 beings has its special physical seat in the 

 brain, it is not astonishing that complicated 

 mechanisms should have arisen among ani- 

 mals for the due perception of mates, food, 

 and foes respectively. Thus, doubtless, the 

 serpent form has imprinted itself indelibly on 

 the senses of monkeys, and the wolf or dog 

 form on those of cows : so that even with a 

 young ape or calf the sight of these their 

 ancestral enemies at once calls up uneasy or 

 terrified feelings in their half-developed minds. 

 Our own infants in arms have no personal 

 experience of the real meaning to be attached 

 to angry tones, yet they shrink from the 

 sound of a gruff voice even before they 

 have learned to distinguish their nurse's 

 face. 



When Grip gets among the sheep, their 

 hereditary traits come out in a very different 

 manner. They are by nature and descent 



