CHAPTER 1.II.

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.


CHAPTER 1.III.

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.