: The Variation of Animals and Plants under Domestication — Volume 1 by Darwin Charles - Variation (Biology); Domestic animals; Plants Cultivated Botany; Animals-Domestic

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INTRODUCTION.

DOMESTIC DOGS AND CATS.

CATS, CROSSED WITH SEVERAL SPECIES--DIFFERENT BREEDS FOUND ONLY IN SEPARATED COUNTRIES--DIRECT EFFECTS OF THE CONDITIONS OF LIFE--FERAL CATS-- INDIVIDUAL VARIABILITY.

HORSES AND ASSES.

HORSE--DIFFERENCES IN THE BREEDS--INDIVIDUAL VARIABILITY OF--DIRECT EFFECTS OF THE CONDITIONS OF LIFE--CAN WITHSTAND MUCH COLD--BREEDS MUCH MODIFIED BY SELECTION--COLOURS OF THE HORSE--DAPPLING--DARK STRIPES ON THE SPINE, LEGS, SHOULDERS, AND FOREHEAD--DUN-COLOURED HORSES MOST FREQUENTLY STRIPED-- STRIPES PROBABLY DUE TO REVERSION TO THE PRIMITIVE STATE OF THE HORSE.

ASSES--BREEDS OF--COLOUR OF--LEG- AND SHOULDER-STRIPES--SHOULDER-STRIPES SOMETIMES ABSENT, SOMETIMES FORKED.

PIGS--CATTLE--SHEEP--GOATS.

PIGS BELONG TO TWO DISTINCT TYPES, SUS SCROFA AND INDICUS--TORFSCHWEIN-- JAPAN PIGS--FERTILITY OF CROSSED PIGS--CHANGES IN THE SKULL OF THE HIGHLY CULTIVATED RACES--CONVERGENCE OF CHARACTER--GESTATION--SOLID-HOOFED SWINE-- CURIOUS APPENDAGES TO THE JAWS--DECREASE IN SIZE OF THE TUSKS--YOUNG PIGS LONGITUDINALLY STRIPED--FERAL PIGS--CROSSED BREEDS.

CATTLE--ZEBU A DISTINCT SPECIES--EUROPEAN CATTLE PROBABLY DESCENDED FROM THREE WILD FORMS--ALL THE RACES NOW FERTILE TOGETHER--BRITISH PARK CATTLE-- ON THE COLOUR OF THE ABORIGINAL SPECIES--CONSTITUTIONAL DIFFERENCES--SOUTH AFRICAN RACES--SOUTH AMERICAN RACES--NIATA CATTLE--ORIGIN OF THE VARIOUS RACES OF CATTLE.

SHEEP--REMARKABLE RACES OF--VARIATIONS ATTACHED TO THE MALE SEX-- ADAPTATIONS TO VARIOUS CONDITIONS--GESTATION OF--CHANGES IN THE WOOL--SEMI- MONSTROUS BREEDS.

GOATS--REMARKABLE VARIATIONS OF.

DOMESTIC RABBITS.

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