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 108
... considered by Professor Huxley to be undoubtedly cetaceans , " and to constitute connecting links with the aquatic carnivora . " Even the wide interval between birds and reptiles has been shown by the naturalist just quoted to be ...
... considered by Professor Huxley to be undoubtedly cetaceans , " and to constitute connecting links with the aquatic carnivora . " Even the wide interval between birds and reptiles has been shown by the naturalist just quoted to be ...
Página 110
... considered as extinct . The three existing genera a1 , q1 , p1 , will form a small family ; b1 and ƒ11 a closely allied family or sub - family ; and o14 , e14 , m14 , a third family . These three families , together with the many ...
... considered as extinct . The three existing genera a1 , q1 , p1 , will form a small family ; b1 and ƒ11 a closely allied family or sub - family ; and o14 , e14 , m14 , a third family . These three families , together with the many ...
Página 125
... considered ; he may urge the apparent , but often falsely apparent , sudden coming in of whole groups of species . He may ask where are the remains of those infinitely numerous organisms which must have existed long before the Cambrian ...
... considered ; he may urge the apparent , but often falsely apparent , sudden coming in of whole groups of species . He may ask where are the remains of those infinitely numerous organisms which must have existed long before the Cambrian ...
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