THE EXPRESSION OF THE
EMOTIONS IN MAN AND ANIMALS
BY
CHARLES DARWIN
M.A., F.R.S., ETC.
_WITH PHOTOGRAPHIC AND OTHER ILLUSTRATIONS_
NEW YORK
D. APPLETON AND COMPANY
1899
Authorized Edition.
CONTENTS.
INTRODUCTION......................................................Pages 1-26
CHAP. I--GENERAL PRINCIPLES OF EXPRESSION. The three chief
principles stated--The first principle--Serviceable actions
become habitual in association with certain states of the mind,
and are performed whether or not of service in each particular case--
The force of habit--Inheritance--Associated habitual movements
in man--Reflex actions--Passage of habits into reflex actions--
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