On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 - 432 páginas |
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Página 26
... organisation has been disturbed by two distinct structures and constitutions , including of course the reproductive systems , having been blended into one . For it is scarcely possible that two organisations should be compounded into ...
... organisation has been disturbed by two distinct structures and constitutions , including of course the reproductive systems , having been blended into one . For it is scarcely possible that two organisations should be compounded into ...
Página 27
... organisation having been dis- turbed by two organisations being compounded into one . A similar parallelism holds good with an allied yet very different class of facts . It is an old and almost universal belief founded on a considerable ...
... organisation having been dis- turbed by two organisations being compounded into one . A similar parallelism holds good with an allied yet very different class of facts . It is an old and almost universal belief founded on a considerable ...
Página 50
... organisation much general re- semblance to the tapir and to the horse ; but in some points of structure may have differed considerably from both , even perhaps more than they differ from each other . Hence , in all such cases , we ...
... organisation much general re- semblance to the tapir and to the horse ; but in some points of structure may have differed considerably from both , even perhaps more than they differ from each other . Hence , in all such cases , we ...
Página 85
... organised of all classes of animals , but is highly organised for its class ; it existed in countless numbers , and , as Dr. Dawson has remarked , certainly preyed on other minute organic beings , which must have lived in great numbers ...
... organised of all classes of animals , but is highly organised for its class ; it existed in countless numbers , and , as Dr. Dawson has remarked , certainly preyed on other minute organic beings , which must have lived in great numbers ...
Página 91
... organised . productions compared with marine and lower produc- tions , by the more complex relations of the higher beings to their organic and inorganic conditions of life , as explained in a former chapter . When many of the ...
... organised . productions compared with marine and lower produc- tions , by the more complex relations of the higher beings to their organic and inorganic conditions of life , as explained in a former chapter . When many of the ...
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admit affinity allied species ancient animals appear Archipelago arctic areas become believe birds Cambrian changes characters cies classification climate closely allied common progenitor continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo eral 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 sediment seeds Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory tion variations varieties whilst widely different wings