Are the Effects of Use and Disuse Inherited?: An Examination of the View Held by Spencer and DarwinMacmillan, 1890 - 156 páginas |
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Página x
... INFERIORITY OF SENSES IN EUROPEANS . 83 • • 85 SHORT - SIGHT IN WATCHMAKERS AND ENGRAVERS 85 LARGER HANDS IN LABOURERS ' INFANTS THICKENED SOLE IN INFANTS 87 888 A SOURCE OF MENTAL CONFUSION . WEAKNESS OF USE - X CONTENTS .
... INFERIORITY OF SENSES IN EUROPEANS . 83 • • 85 SHORT - SIGHT IN WATCHMAKERS AND ENGRAVERS 85 LARGER HANDS IN LABOURERS ' INFANTS THICKENED SOLE IN INFANTS 87 888 A SOURCE OF MENTAL CONFUSION . WEAKNESS OF USE - X CONTENTS .
Página xi
... WEAKNESS OF USE - INHERITANCE . PAGE 91 94 INHERITED INJURIES • INHERITED MUTILATIONS 101-118 THE MOTMOT'S TAIL . • OTHER INHERITED INJURIES MENTIONED BY DARWIN . QUASI - INHERITANCE · ΙΟΙ ΙΙΟ III 116 MISCELLANEOUS CONSIDERATIONS 119 ...
... WEAKNESS OF USE - INHERITANCE . PAGE 91 94 INHERITED INJURIES • INHERITED MUTILATIONS 101-118 THE MOTMOT'S TAIL . • OTHER INHERITED INJURIES MENTIONED BY DARWIN . QUASI - INHERITANCE · ΙΟΙ ΙΙΟ III 116 MISCELLANEOUS CONSIDERATIONS 119 ...
Página 13
... weakness of the parts concerned favouring harmlessness . Mr. Spencer maintains that the dwindling of the parts concerned in clenching the jaw is certainly not due to artificial selection because the modifica- tions offer no appreciable ...
... weakness of the parts concerned favouring harmlessness . Mr. Spencer maintains that the dwindling of the parts concerned in clenching the jaw is certainly not due to artificial selection because the modifica- tions offer no appreciable ...
Página 34
... must be its practical inefficacy , arising probably from its weakness , its obscurity and uncertainty or its non - existence . INHERITED EPILEPSY IN GUINEA - PIGS . Brown - Séquard's 34 ARE THE EFFECTS OF USE INHERITED ?
... must be its practical inefficacy , arising probably from its weakness , its obscurity and uncertainty or its non - existence . INHERITED EPILEPSY IN GUINEA - PIGS . Brown - Séquard's 34 ARE THE EFFECTS OF USE INHERITED ?
Página 38
... weakness , and not the previous long - continued vigour ? ( 2 ) Members of nervous families would be liable to suffer from nervous prostration , and by the ordinary law of heredity alone would transmit nervousness to their children ...
... weakness , and not the previous long - continued vigour ? ( 2 ) Members of nervous families would be liable to suffer from nervous prostration , and by the ordinary law of heredity alone would transmit nervousness to their children ...
Otras ediciones - Ver todas
Términos y frases comunes
acquired characters acquired modifications alleged Animals and Plants appears artificial selection atavism attributed Aylesbury duck become birds bones breeds cause cent civilization concomitant variation Contemporary Review Crown 8vo cumulative Darwin Descent deterioration diminished diminution diseases domestic animals domestic rabbit duck effects of ancestral effects of disuse enlarged epilepsy evidence evil explanation eyes fact factor of evolution fancy pigeons father favoured Francis Darwin Francis Galton Galton gemmules guinea-pigs heredity Illustrations improvement incisors increased individual inherited effects inherited injuries inherited mutilations insects instances instincts jaws Lamarckian leg-bones legs lengthened muscles natural or artificial natural selection nervous neuter offspring organs Origin of Species pangenesis panmixia parents pigeons Plants under Domestication quasi-inheritance race Ray Lankester reduced wings relative reproductive elements sexual selection shortened Spencer spite of disuse spontaneous variations sternum structure suppose tameness teeth tend tendency theory thickened sole tion toes transmit true inheritance use-inheritance Variation of Animals weight Weismann wing-bones
Pasajes populares
Página 26 - For peculiar habits confined to the workers or sterile females, however long they might be followed, could not possibly affect the males and fertile females, which alone leave descendants. I am surprised that no one has hitherto advanced this demonstrative case of neuter insects, against the well-known doctrine of inherited habit, as advanced by Lamarck.