AMERICAN SCIENCE SERIES— AD VANCED COURSE
THE PRINCIPLES
OF
WILLIAM JAMES
PROFESSOR OF PSYCHOLOGY IN HARVARD UNIVERSITY
IN TWO VOLUMES
VOL. II
NEW YORK
HENRY HOLT AND COMPANY
Ul
V * £-»
Copyright, 1P90
BY
HENRY HOLT & CO.
HOBERT DRTIMMOND, ELECTROTYPER AND PRINTER, NEW YORE
CONTENTS.
CHAPTER XVII.
PAOK
SENSATION,.... '.....1
Its distinction from perception, 1. Its cognitive function —
acquaintance with qualities, 3. No pure sensations after the first days of life, 7. The 'relativity of knowledge/ 9. The law of contrast, 13. The psychological and the physiological theories of it, 17. Bering's experiments, 20. The ' eccentric projection '
of sensations, 31.
CHAPTER XVIII.
IMAGINATION, 44
Our images are usually vague, 45. Vague images not neces sarily general notions, 48. Individuals differ in imagination;
Gallon's researches, 50, The 'visile' type, 58. The 'audile'
type, 60. The 'motile' type, 61. Tactile images. 65. The neural process of imagination, 68. Its relations to that of sensation, 72.
CHAPTER XIX.
THE PERCEPTION OF ( THINGS/ 76
Perception and sensation, 76. Perception is of definite and probable things, 82. Illusions, 85;— of the first type, 86;— of the second type, 95. The neural process in perception, 103.
'Apperception,' 107. Is perception an unconscious inference?
ll1. Hallucinations, ll4. The neural process in hallucination,
122. Binet's th…