INTELLIGENCE 147 



of the sea ; whilst the old, the irresponsive, adopt her- 

 mitage in the soil away from the stress of life. So it 

 is not till the physical adjustments become varied, 

 sound, and performed with ease and without thought, 

 that we find the dawn of intelligent response to the 

 living factors of the situation ; the response to an 

 impulse, not themselves, that has been at work all along, 

 but is hidden from animal life until a certain stage 

 of responsiveness has been attained. Then as racial 

 instinct, the spirit of the hive, or by whatever name 

 we call it, sometimes in solitude, more often in com- 

 panies, the liner issues of life are felt and responded 

 to by those that generations of manual work, delicacy 

 of touch, and observance of open-air changes have 

 cultivated. Birds and insects rule the air by un- 

 thinking adjustment. Man rules the earth by 

 thoughtful adjustment. His success is due to his 

 power for profiting by experience, both in his in- 

 dividual and corporate life, and thereby rising in 

 capacity for response to more and more complex 

 motives, whether for good or for evil. 



The domestication of animals may illustrate what 

 far-reaching results flow from a simple act when that 

 act can be repeated and modified in the light of 

 experience. 



In common with other carnivorous animals man 

 kills for food, and in general with as little foresight 

 as they. Nevertheless, here and there a genius will 

 have noticed that, after a successful chase, to keep 

 alive that which is not required will give power. And 



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