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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.
CHAPTER XVII.
SENSATION
Its distinction from perception. Its cognitive
function--acquaintance with qualities. No pure sensations after the
first days of life. The 'relativity of knowledge'. The law of
contrast. The psychological and the physiological theories of it.
Hering's experiments. The 'eccentric projection' of sensations.