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--
Associated habitual movements in the lower animals--
Concluding remarks ............27-49

CHAP. II--GENERAL PRINCIPLES OF EXPRESSION--_continued_. The Principle