The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life and The Descent of Man and Selection in Relation to SexModern library, 1936 - 1000 páginas |
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Página 289
... means of transport are sometimes called accidental , but this is not strictly correct : the currents of the sea are not accidental , nor is the direction of prevalent gales of wind . It should be observed that scarcely any means of ...
... means of transport are sometimes called accidental , but this is not strictly correct : the currents of the sea are not accidental , nor is the direction of prevalent gales of wind . It should be observed that scarcely any means of ...
Página 707
... means would be employed to charm the females ; and melody of voice offers one such means . In some birds the vocal organs differ greatly in the two sexes . In the Tetrao cupido ( fig . 39 ) the male has two bare , orange - coloured ...
... means would be employed to charm the females ; and melody of voice offers one such means . In some birds the vocal organs differ greatly in the two sexes . In the Tetrao cupido ( fig . 39 ) the male has two bare , orange - coloured ...
Página 929
... means of , 284 . during Glacial period , 289 . Distribution , geographical , 278 . means of , 284 . Disuse , effect of , under nature , 102 . Divergence of character , 83 . Diversification of means for same general purpose , 142 ...
... means of , 284 . during Glacial period , 289 . Distribution , geographical , 278 . means of , 284 . Disuse , effect of , under nature , 102 . Divergence of character , 83 . Diversification of means for same general purpose , 142 ...
Contenido
INTRODUCTION | 3 |
VARIATION UNDER DOMESTICATION | 15 |
CHAPTER II | 38 |
Derechos de autor | |
Otras 23 secciones no mostradas
Otras ediciones - Ver todas
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
The Origin of the Species by Means of Natural Selection Charles Darwin Sin vista previa disponible - 2012 |
Términos y frases comunes
acquired adult allied apes appear Argus pheasant beak beautiful become believe birds breeds cause characters closely colour common confined crossed crustaceans degree descended developed distinct species domestic doubt eggs existing extinct extremely fact favourable feathers female fertility fishes formation forms Fritz Müller genera genus gradations greater number groups habits horns hybrids important individuals inhabitants inherited insects instance instincts intermediate islands kind larvæ latter Lepidoptera less likewise living Malay Archipelago males mammæ mammals manner Marsupials modified monkeys natural selection naturalists nearly nest observed occur ocelli offspring organs Origin of Species ornaments perfect period pigeons plants plumage pollen possess present probably produced progenitor quadrupeds races relation remarks resemble rudimentary seeds sexes sexual selection shew shewn slight South America sterility stridulating structure supposed tail tion transmitted variability variations varieties various vary whilst whole widely wings young Zoolog