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CONTENTS.
I.
THE MOVEMENTS AND HABITS OF PLANTS.
PAGE
The Movement of Plants in Relation to their Wants.
2
The Power of Movement in Animal and Plant compared.
4
Why the Sexes have been reseparated
Comparative Fertility of Male and Female Plants
Effect of Climate on Reproduction
Causes of Sterility among Plants
An "Ideal Type" or Inevitable Modification
Special Adaptations to a Changing Purpose
An Illustration
14
15
16
17
18
19
21
As interesting on the Theory of Development as on that of Direct
II.
THE PART PLAYED BY WORMS IN THE HISTORY OF THIS PLANET.
THE LAWS OF VARIABILITY WITH RESPECT TO ANIMALS AND PLANTS.
Laws of Inheritance that are fairly well established.
Inherited Peculiarities in Man
66
67
Inherited Diseases
68
Causes of Non-Inheritance
Steps by which Domestic Races have been produced
69
71
No such Thing as Change in the Result of the Struggle
90 V.
NATURAL SELECTION; OR, THE SURVIVAL OF THE FITTEST.
An Invented Hypothesis
93
How far the Theory may be extended
94
Is there any Limit to what Selection can effect?
96
No Modification in one Species designed for the Good of Another
103
Identity of the Species of Islands with those of the Mainland ex-
plained only by this Theory
125
VII.
EVIDENCE OF THE DESCENT OF MAN FROM SOME LOWER FORM.
Points of Correspondence between Man and the other Animals
The facts of Embryology and the Theory of Development
Two Principles that explain the Facts
Embryology against Abrupt Changes
135
Rudimentary Organs only to be explained on the Theory of De-
The History of Life on the Theory of Descent with Modification.
Letters retained in the Spelling but Useless in Pronunciation
144
146
The Inherited Effects of the Increased and Diminished Use of Parts. 156
MENTAL POWERS OF MAN AND THE LOWER ANIMALS COMPARED.
Fundamental Intuitions the same in Man and the other Animals.
Man and the Lower Animals excited by the same Emotions
All Animals possess some Power of Reasoning
The Power of Association in Dog and Savage
The Lower Animals progress in Intelligence
The Power of Abstraction
175
177
179
181
182
183
SEXUAL SELECTION AS AN AGENCY TO ACCOUNT FOR THE DIFFERENCES
BETWEEN THE RACES OF MAN.
Struggle of the Males for the Possession of the Females
236
Courtship among the Lower Animals
237
Why the Male plays the more Active Part in Courting
Transmission of Sexual Characteristics
239
240
An Objection answered
242
Difference between the Sexes created by Sexual Selection
How Woman could be made to reach the Standard of Man
243
246
"Characteristic Selfishness of Man "
No Universal Standard of Beauty among Mankind
Development of the Beard
Development of the Marriage-Tie
Unnatural Selection in Marriage
Modifying Influences in Both Sexes
"Grounds that will never be shaken"
247
248
249
250
252
254
256