THE PRINCIPLES
OF
PSYCHOLOGY
BY
WILLIAM JAMES
PROFESSOR OF PSYCHOLOGY IN HARVARD UNIVERSITY
IN TWO VOLUMES
VOL II.
NEW YORK
HENRY HOLT AND COMPANY
1918
CONTENTS.
Sensation, 1
Its distinction from perception, 1. Its cognitive function—acquaintancewith qualities, 3. No pure sensations after the firstdays of life, 7. The 'relativity of knowledge,' 9. The law ofcontrast, 13. The psychological and the physiological theoriesof it, 17. Hering's experiments, 20. The 'eccentric projection'of sensations, 31.
Imagination, 44
Our images are usually vague, 45. Vague images not necessarilygeneral notions, 48. Individuals differ in imagination;Gabon's researches, 50. The 'visile' type, 58. The 'audile'type, 60. The 'motile' type, 61. Tactile images, 65. The neuralprocess of imagination, 68. Its relations to that of sensation, 72.
The Perception of 'Things,' 76
Perception and sensation, 76. Perception is of definite andprobable things, 82. Illusions, 85;—of the first type, 86;—ofthe second type, 95. The neural process in perception, 103.'Apperception,' 107. Is perception an unconscious inference?111. Hallucinations, 114. The neural process in hallucination,122. Binet's theory, 129. 'Perception-time,' 131.
The Perception of Space, 134
The feeling of crude extensity, 134. The perception of spatialorder, 145. Space-'relations,' 148. The meaning of localization,158. 'Local signs,' <