CONTENTS.

PREFACEPAGE
[v]
IMPORTANCE AND BEARING OF THE INQUIRY[1]
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]
Æsthetic 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]