viil Contents 
Learning without Tuition . : A . 
Tests with Mechanisms . 
Tests with Signals : : 
Experiments on the Influence of Tuition 
Introduction . 
Imitation of Human Beings 
Imitation of Other Monkeys . c 
Learning apart from Motor Impulses 
General Mental Development of the Monkeys 
LAWS AND HYPOTHESES OF BEHAVIOR 
THE EVOLUTION OF THE HUMAN INTELLECT 
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