The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Том 2D. Appleton, 1897 |
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Стр. 55
... Tertiary strata .. .. .. Feet . 57,154 13,190 .. 2,240 .. --making altogether 72,584 feet ; that is , very nearly thirteen and three - quarters British miles . Some of the formations , which are represented in England by thin beds , are ...
... Tertiary strata .. .. .. Feet . 57,154 13,190 .. 2,240 .. --making altogether 72,584 feet ; that is , very nearly thirteen and three - quarters British miles . Some of the formations , which are represented in England by thin beds , are ...
Стр. 59
... tertiary formation : yet it is known that the genus Chthamalus existed during the Chalk period . Lastly , many great deposits requiring a vast length of time for their accumulation , are entirely destitute of organic remains , without ...
... tertiary formation : yet it is known that the genus Chthamalus existed during the Chalk period . Lastly , many great deposits requiring a vast length of time for their accumulation , are entirely destitute of organic remains , without ...
Стр. 61
... tertiary beds are so poorly developed , that no record of several successive and peculiar marine faunas will probably be preserved to a distant age . A little reflection will explain why , along the rising coast of the western side of ...
... tertiary beds are so poorly developed , that no record of several successive and peculiar marine faunas will probably be preserved to a distant age . A little reflection will explain why , along the rising coast of the western side of ...
Стр. 62
... tertiary formation on the west coast of South America , which has been bulky enough to resist such degradation as it has as yet suffered , but which will hardly last to a distant geological age , was deposited during a downward ...
... tertiary formation on the west coast of South America , which has been bulky enough to resist such degradation as it has as yet suffered , but which will hardly last to a distant geological age , was deposited during a downward ...
Стр. 64
... belonged to this class . Inland , along the whole northern bank of the Plata I saw , besides modern tertiary beds , only one small patch of slightly metamorphosed rock , which alone could 64 [ CHAP . X THE POORNESS OF OUR.
... belonged to this class . Inland , along the whole northern bank of the Plata I saw , besides modern tertiary beds , only one small patch of slightly metamorphosed rock , which alone could 64 [ CHAP . X THE POORNESS OF OUR.
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The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Ограниченный просмотр - 1982 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Просмотр фрагмента - 1982 |
The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Недоступно для просмотра - 2014 |
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accumulated adapted admit 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 record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammæ mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation paleozoic 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 variable variations varieties whilst widely different wings