iv CONTENTS OF VOL. I. 



PABK 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 Page 65 



CHAPTER IV. 



DOMESTIC BABBITS. 



DOMESTIC RABBITS DESCENDED FROM THE COMMON WILD RABBIT — ANCIENT DOMESTI- 

 CATION — ANCIENT SELECTION — LARGE LOP-EARED RABBITS — VARIOUS BREEDS 

 — FLUCTUATING CHARACTERS — ORIGIN OF THE HIMALAYAN BREED — CURIOUS 

 CASE OF INHERITANCE — FERAL RABBITS IN JAMAICA AND THE FALKLAND ISLANDS — 

 PORTO SANTO FERAL RABBITS — OSTEOLOGICAL CHARACTERS — SKULL — SKULL OF 

 HALF-LOP RABBITS — VARIATIONS IN THE SKULL ANALOGOUS TO DIFFERENCES IN 

 DIFFERENT SPECIES OF HARES — VERTEBRA — STERNUM — SCAPULA — EFFECTS 

 OF USE AND DISUSE ON THE PROPORTIONS OF THE LIMBS AND BODY — CAPACITY OF 

 THE SKULL AND REDUCED SIZE OF THE BRAIN — SUMMARY ON THE MODIFICATIONS 

 OF DOMESTICATED RABBITS 103 



. CHAPTER V. 



DOMESTIC PIGEONS. 



ENUMERATION AND DESCRIPTION OF THE SEVERAL BREEDS — INDIVIDUAL VARIABILITY 

 — VARIATIONS OF A REMARKABLE NATURE — OSTEOLOGICAL CHARACTERS : SKULL, 

 LOWER JAW, NUMBER OF VERTEBRAE — CORRELATION OF GROWTH : TONGUE WITH 

 BEAK ; EYELIDS AND NOSTRILS WITH WATTLED SKIN — NUMBER OF WING-FEATHERS, 

 AND LENGTH OF WING — COLOUR AND DOWN — WEBBED AND FEATHERED FEET — 

 ON THE EFFECTS OF DISUSE — LENGTH OF FEET IN CORRELATION WITH LENGTH OF 

 BEAK — LENGTH OF STERNUM, SCAPULA, AND FURCULA — LENGTH OF WINGS — 

 SUMMARY ON THE POINTS OF DIFFERENCE IN THE SEVERAL BREEDS . . . . 131 



CHAPTER VI. 



PIGEONS — con United. 



ON THE ABORIGINAL PARENT-STOCK OF THE SEVERAL DOMESTIC RACES — HABITS OF 

 LIFE — WILt > RACES OF THE ROCK-PIGEON — DOVECOT-PIGEONS — PROOFS OF THE 

 DESCENT OF THE SEVERAL RACES FROM COLUMBA LIVIA — FERTILITY OF THE RACES 

 WHEN CROSSED — REVERSION TO THE PLUMAGE OF THE WILD ROCK-PIGEON — 

 CIRCUMSTANCES FAVOURABLE TO THE FORMATION OF THE RACES — ANTIQUITY AND 

 HISTORY OF THE PRINCIPAL RACES — MANNER OF THEIR FORMATION — SELECTION 



UNCONSCIOUS SELECTION — CARE TAKEN BY FANCIERS IN SELECTING THEIR 



BIRDS — SLIGHTLY DIFFERENT STRAINS GRADUALLY CHANGE INTO WELL-MARKED 

 BREEDS — EXTINCTION OF INTERMEDIATE FORMS — CERTAIN BREEDS REMAIN 

 PERMANENT, WHILST OTHERS CHANGE — SUMMARY 180 



