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 39
... important parts of structure , which he could collect on good authority , as I have collected , during a course of years . It should be remembered that systematists are far from being pleased at finding variability in important ...
... important parts of structure , which he could collect on good authority , as I have collected , during a course of years . It should be remembered that systematists are far from being pleased at finding variability in important ...
Página 321
... importance . Any number of instances could be given of the varying importance for classification of the same important organ within the same group of beings . Again , no one will say that rudimentary or atrophied organs are of high ...
... importance . Any number of instances could be given of the varying importance for classification of the same important organ within the same group of beings . Again , no one will say that rudimentary or atrophied organs are of high ...
Página 322
... important points of structure from the proper type of the order , yet M. Richard sagaciously saw , as Jussieu observes , that this ge- nus should still be retained amongst the Malpighiaceæ . This case well il- lustrates the spirit of ...
... important points of structure from the proper type of the order , yet M. Richard sagaciously saw , as Jussieu observes , that this ge- nus should still be retained amongst the Malpighiaceæ . This case well il- lustrates the spirit of ...
Contenido
INTRODUCTION | 3 |
VARIATION UNDER DOMESTICATION | 15 |
CHAPTER II | 38 |
Derechos de autor | |
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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