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 146
... kinds of seeds , out of the excrement of small birds , and these seemed perfect , and some of them , which were tried , germinated . But the following fact is more important : the crops of birds do not secrete gastric juice , and do not ...
... kinds of seeds , out of the excrement of small birds , and these seemed perfect , and some of them , which were tried , germinated . But the following fact is more important : the crops of birds do not secrete gastric juice , and do not ...
Página 178
... kinds which inhabit oceanic islands are few in number compared with those on equal con- tinental areas : Alph . de Candolle admits this for plants , and Wollaston for insects . New Zealand , for instance , with its lofty mountains and ...
... kinds which inhabit oceanic islands are few in number compared with those on equal con- tinental areas : Alph . de Candolle admits this for plants , and Wollaston for insects . New Zealand , for instance , with its lofty mountains and ...
Página 224
... kind , has a better chance of escaping destruction from predaceous birds and insects , and is consequently oftener preserved ; - " the less perfect degrees of resemblance being ... kinds mocking other 224 [ CHAP . XIV . CLASSIFICATION .
... kind , has a better chance of escaping destruction from predaceous birds and insects , and is consequently oftener preserved ; - " the less perfect degrees of resemblance being ... kinds mocking other 224 [ CHAP . XIV . CLASSIFICATION .
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