SPENCER'S EXAMPLES AND ARGUMENTS 6-44
DIMINUTION OF THE JAWS 6
DIMINISHED BITING MUSCLES OF LAP-DOGS 12
CROWDED TEETH 14
BLIND CAVE-CRABS 17
NO CONCOMITANT VARIATION FROM CONCOMITANT DISUSE 17
THE GIRAFFE, AND NECESSITY FOR CONCOMITANT VARIATION 18
ALLEGED RUINOUS EFFECTS OF NATURAL SELECTION 23
ADVERSE CASE OF NEUTER INSECTS 24
AESTHETIC FACULTIES 29
LACK OF EVIDENCE 34
INHERITED EPILEPSY IN GUINEA-PIGS 35
INHERITED INSANITY AND NERVOUS DISORDERS 36
INDIVIDUAL AND TRANSMISSIBLE TYPE NOT MODIFIED ALIKE 40
DARWIN'S EXAMPLES 45-100
REDUCED WINGS OF BIRDS OF OCEANIC ISLANDS 49
DROOPING EARS AND DETERIORATED INSTINCTS 53
WINGS AND LEGS OF DUCKS AND FOWLS 55
PIGEONS' WINGS 62
SHORTENED BREAST-BONE IN PIGEONS 64
SHORTENED FEET IN PIGEONS 70
SHORTENED LEGS OF RABBITS 70
BLIND CAVE-ANIMALS 72
INHERITED HABITS 73
TAMENESS OF RABBITS 76
MODIFICATIONS OBVIOUSLY ATTRIBUTABLE TO SELECTION 82
SIMILAR EFFECTS OF NATURAL SELECTION AND USE-INHERITANCE 83
INFERIORITY OF SENSES IN EUROPEANS 85
SHORT-SIGHT IN WATCHMAKERS AND ENGRAVERS 85
LARGER HANDS OF LABOURERS' INFANTS 87
THICKENED SOLE IN INFANTS 88
A SOURCE OF MENTAL CONFUSION 91
WEAKNESS OF USE-INHERITANCE 94
INHERITED INJURIES 101-118
INHERITED MUTILATIONS 101
THE MOTMOT'S TAIL 110
OTHER INHERITED INJURIES MENTIONED BY DARWIN 111
QUASI-INHERITANCE 116
MISCELLANEOUS CONSIDERATIONS 119-143
TRUE RELATION OF PARENTS AND OFFSPRING 119
INVERSE INHERITANCE 123
EARLY ORIGIN OF THE OVA 124
MARKED EFFECTS OF USE AND DISUSE ON THE INDIVIDUAL 126
WOULD NATURAL SELECTION FAVOUR USE-INHERITANCE? 127
USE-INHERITANCE AN EVIL 128
VARIED EFFECTS OF USE AND DISUSE 134
USE-INHERITANCE IMPLIES PANGENESIS 137
PANGENESIS IMPROBABLE 138
SPENCER'S EXPLANATION OF USE-INHERITANCE 141
CONCLUSIONS 144-156
USE-INHERITANCE DISCREDITED AS UNNECESSARY, UNPROVEN,
AND IMPROBABLE 144
MODERN RELIANCE ON USE-INHERITANCE MISPLACED 145