Подробнее о книге
Моя библиотека
Книги в Google Play
Works
4
THE
ORIGIN OF SPECIES
BY MEANS OF NATURAL SELECTION
OR THE PRESERVATION OF FAVORED RACES IN THE STRUGGLE FOR LIFE
BY
CHARLES DARWIN, M. A., LL. D., F. R. S.
WITH ADDITIONS AND CORRECTIONS FROM SIXTH AND LAST ENGLISH EDITION
IN TWO VOLUMES
VOLUME I
NEW YORK
D. APPLETON AND COMPANY
1896
UNIV. WIS.--MADISON
Authorized Edition.
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
....
. 7
--
CHAPTER II.
VARIATION UNDER NATURE.
-
Variability Individual differences · - Doubtful species Wide
ranging, much diffused, and common species, vary most--
Species of the larger genera in each country vary more fre-
quently than the species of the smaller genera-Many of the
species of the larger genera resemble varieties in being very
closely, but unequally, related to each other, and in having
restricted ranges
51