CONTENTS 
PAGE 
THE STUDY OF CONSCIOUSNESS AND THE STUDY OF BEHAVIOR I 
ANIMAL INTELLIGENCE. : i . . ‘ : - 20 
Introduction ‘ 7 F : . 7 $ - 20 
Description of Aupacann a : 2 : : : - 29 
Experiments with Cats . . é : 7 ‘ ‘ s 35 
Experiments with Dogs 2 : ; % : - 56 
Experiments with Chicks. ; : . : - - 61 
Reasoning or Inference : P ; : : , - 67 
Imitation . 5 ; : : : . : . . 76 
In Chicks. ‘ ‘ fs ‘ i ‘ ‘ . 81 
In Cats . ‘ . ‘ 3 . 4 ‘ . - 85 
In Dogs . ; . : : . - 92 
~The Mental Fact in ecoetafign , . - 98 
Association by Similarity and the Formation ‘of Concepts - 116 
Criticism of Previous Theories. ‘ ‘ . . - 125 
Delicacy of Association ‘ : : ‘ . ; - 128 
Complexity of Associations . ‘ : 3 é a . 132 
Number of Associations i : : ‘ : . + 135 
Permanence of Associations . ‘i F : é . . 138 
Inhibition of Instincts by Habit . : : ‘ ‘i - 142 
Attention . 7 é js F - 144 
The Social Conscionsiess of ‘Apinals : : ‘ : - 146 
Interaction . ‘ 3 3 - 147 
Applications to Pedogoey Anthropology, ate, : : - 149 
Conclusion . . ‘ F - 153 
Tue INSTINCTIVE REACTIONS OF YOUNG CHICKS . z . 156 
A NOTE ON THE PSYCHOLOGY OF FISHES . : : - 169 
THE MENTAL LIFE OF THE MONKEYS. z ; ‘ - 172 
Introduction : : ‘ e . : ‘ : » 173° 
Apparatus. x a é ‘ ‘ s ‘ . . 197 
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