The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen2AMS Press, 1972 |
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... classification , explained on the theory of descent with modification - Classification of varieties— Descent always used in classification - Analogical or adaptive characters - Affinities , general , complex , and radiating - Ex ...
... classification , explained on the theory of descent with modification - Classification of varieties— Descent always used in classification - Analogical or adaptive characters - Affinities , general , complex , and radiating - Ex ...
Página 202
... classification , explained on the theory of descent with modification - Classification of varieties - Descent always used in classification - Analogical or adaptive characters -Affinities , general , complex , and radiating - Extinction ...
... classification , explained on the theory of descent with modification - Classification of varieties - Descent always used in classification - Analogical or adaptive characters -Affinities , general , complex , and radiating - Extinction ...
Página 207
... classification ; yet no one will say that the antennæ in these two divisions of the same order are of unequal physiological importance . Any number of instances could be given of the vary- ing importance for classification of the same ...
... classification ; yet no one will say that the antennæ in these two divisions of the same order are of unequal physiological importance . Any number of instances could be given of the vary- ing importance for classification of the same ...
Contenido
CONTENTS OF VOL | 1 |
CHAPTER X | 48 |
CHAPTER XII | 129 |
Derechos de autor | |
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The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1962 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1963 |
Términos y frases comunes
accumulated adapted admit adult affinity allied species ancient animals appear Archipelago arctic areas become beds believe birds breeds Cambrian changes characters classification climate closely allied continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo Europe existing extinct fact faunas fertilised fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds Silurian slight South America species belonging stage stamens sterility structure successive suppose terrestrial tertiary tion variations varieties whilst widely different wings