Chapter 3

PIGS--CATTLE--SHEEP--GOATS.

PIGS BELONG TO TWO DISTINCT TYPES, SUS SCROFA AND INDICA--TORF-SCHWEIN--JAPAN PIG--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. {iv}

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 ... Page 65