original observations.

The first edition of this work was published on November 24, 1859, and the
second edition on January 7, 1860.



CONTENTS.


INTRODUCTION


CHAPTER I.

VARIATION UNDER DOMESTICATION.

Causes of Variability -- Effects of Habit and the use or disuse of Parts --
Correlated Variation -- Inheritance -- Character of Domestic Varieties --
Difficulty of distinguishing between Varieties and Species -- Origin of
Domestic Varieties from one or more Species -- Domestic Pigeons, their
Differences and Origin -- Principles of Selection, anciently followed,
their Effects -- Methodical and Unconscious Selection -- Unknown Origin of
our Domestic Productions -- Circumstances favourable to Man's power of
Selection.


CHAPTER II.

VARIATION UNDER NATURE.