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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Página 152
... arctic climate . The ruins of a house burnt by fire de not tell their tale more plainly than do the mountains of ... arctic fauna and flora , covering the central parts of Europe , as far south as the Alps and Pyrenees , and even ...
... arctic climate . The ruins of a house burnt by fire de not tell their tale more plainly than do the mountains of ... arctic fauna and flora , covering the central parts of Europe , as far south as the Alps and Pyrenees , and even ...
Página 153
... arctic forms would retreat northward , closely followed up in their retreat by the productions of the more temperate regions . And as the snow melted from the bases of the moun- tains , the arctic forms would seize on the cleared and ...
... arctic forms would retreat northward , closely followed up in their retreat by the productions of the more temperate regions . And as the snow melted from the bases of the moun- tains , the arctic forms would seize on the cleared and ...
Página 155
... arctic and temperate forms round the world , at the commence- ment of the real Glacial period . At the present day , the sub - arctic and northern temperate productions of the Old and New Worlds are separated from each other by the ...
... arctic and temperate forms round the world , at the commence- ment of the real Glacial period . At the present day , the sub - arctic and northern temperate productions of the Old and New Worlds are separated from each other by the ...
Contenido
CONTENTS OF VOL | 1 |
CHAPTER X | 48 |
CHAPTER XII | 129 |
Derechos de autor | |
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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