On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for LifeAppleton, 1898 |
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Página 50
... form , such as C. œnas . So , with natural species , if we look to forms very distinct , for instance to the horse ... parent . The common parent will have had in its whole organisation much general re- semblance to the tapir and to the ...
... form , such as C. œnas . So , with natural species , if we look to forms very distinct , for instance to the horse ... parent . The common parent will have had in its whole organisation much general re- semblance to the tapir and to the ...
Página 78
... parent- form : and in the succeeding formation , such groups or species will appear as if suddenly created . I may ... forms would often long remain con- fined to some one region ; but that , when this adapta- tion had once been effected ...
... parent- form : and in the succeeding formation , such groups or species will appear as if suddenly created . I may ... forms would often long remain con- fined to some one region ; but that , when this adapta- tion had once been effected ...
Página 92
Charles Darwin. ism to organism in the struggle for life , that any form ... forms . -the old and the new - would not be identically the same ; for both would almost ... parent rock - pigeon were likewise destroyed , and 92 [ CHAP . XI . THE ...
Charles Darwin. ism to organism in the struggle for life , that any form ... forms . -the old and the new - would not be identically the same ; for both would almost ... parent rock - pigeon were likewise destroyed , and 92 [ CHAP . XI . THE ...
Página 110
... parent - form ( A ) will form an order , for all will have inherited something in common from their ancient progenitor . On the principle of the continued tendency to divergence of character , which was formerly illustrated by this ...
... parent - form ( A ) will form an order , for all will have inherited something in common from their ancient progenitor . On the principle of the continued tendency to divergence of character , which was formerly illustrated by this ...
Página 114
... forms successively produced necessarily en- dure for corresponding lengths of time . A very an- cient form may ... parent rock - pigeon still lives ; and many varieties between the rock - pigeon and the carrier have become extinct ; and ...
... forms successively produced necessarily en- dure for corresponding lengths of time . A very an- cient form may ... parent rock - pigeon still lives ; and many varieties between the rock - pigeon and the carrier have become extinct ; and ...
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Términos y frases comunes
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