INTELLIGENCE, POWER, 



weeks-old native baby are examples of the rapid develop- 

 ment of the simple brain of the Tommie and the long period 

 of development required in the complicated brain of the 

 child. 



The Senses 



The extraordinary development of seeing, hearing, and 

 smelling among animals baffles civilized man. No animal 

 in such a competitive world as tropical Africa could exist 

 unless its senses were acutely attuned. 



Native man, who freely mingles in the vast menagerie of 

 powerful, fleet, cunning, and poisonous animals, could not 

 survive without the possession of keen senses. Large, lum- 

 bering animals like the elephant, the rhinoceros, and the 

 hippopotamus, protected by strength and by thickness of 

 hide, have no further use for eyesight than seeing their 

 food, their fellows, and the surface of the ground; yet the 

 senses of all herd animals are more highly developed than 

 in native man. 



The predatory animal must kill to live, and the prey of 

 the predatory animal in order to live must escape. Thus 

 each species sees, hears, and smells with the acuteness that 

 the survival of these senses has afforded its species. In 

 comparison man has lost virtually all his sense of smell and 

 hears and sees only indifferently. The visitor coming to 

 Africa to collect animals finds himself outclassed by natives 

 and animals as to the acuteness of his senses, fleetness of 

 limb, such natural weapons as teeth and claws, passive 

 defenses against heat and the fierce rays of the sun, and 

 the ability to endure thirst and hunger. 



As we returned to camp after belated dissections in the 

 Rift Valley, our lanterns lighting our way, we were always 

 amazed at the myriads of eyes flashing from the grass, the 

 high bush about us and the trees. To possess survival 

 value, the eye must collect sufficient light to form images 

 in the brain. The more dim the light in which the animal 



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