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 46
... vary most , by tabulating all the varieties in several well- worked foras . At first this seemed a simple task ; but ... varying species . Dr. Hooker permits me to add that after having carefully read my manuscript , and examined the ...
... vary most , by tabulating all the varieties in several well- worked foras . At first this seemed a simple task ; but ... varying species . Dr. Hooker permits me to add that after having carefully read my manuscript , and examined the ...
Página 88
... vary in large genera than in small genera ; and the varying species of the large genera present a greater number of varieties . We have , also , seen that the species , which are the commonest and the most widely diffused , vary more ...
... vary in large genera than in small genera ; and the varying species of the large genera present a greater number of varieties . We have , also , seen that the species , which are the commonest and the most widely diffused , vary more ...
Página 426
... vary , and in varying come to resemble those of the Quadruma- na . The following references relate to the few points touched on in my text : ' Proc . Royal Soc . ' vol . xiv . 1865 , pp . 379-384 ; vol . xv . 1866 , pp . 241 , 242 ; vol ...
... vary , and in varying come to resemble those of the Quadruma- na . The following references relate to the few points touched on in my text : ' Proc . Royal Soc . ' vol . xiv . 1865 , pp . 379-384 ; vol . xv . 1866 , pp . 241 , 242 ; vol ...
Contenido
INTRODUCTION | 3 |
VARIATION UNDER DOMESTICATION | 15 |
CHAPTER II | 38 |
Derechos de autor | |
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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 Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
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