The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, 1권D. Appleton, 1898 |
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... living things . " Farther on ( p . xc . ) , after referring to geographical dis- tribution , he adds , " These phenomena shake our confi- dence in the conclusion that the Apteryx of New Zealand and the Red Grouse of England were ...
... living things . " Farther on ( p . xc . ) , after referring to geographical dis- tribution , he adds , " These phenomena shake our confi- dence in the conclusion that the Apteryx of New Zealand and the Red Grouse of England were ...
xxiv 페이지
... living plants and animals are not separated from the extinct by new creations , but are to be regarded as their descendants through contin- ued reproduction . " A well - known French botanist , M. Lecoq , writes in 1854 ( Etudes sur ...
... living plants and animals are not separated from the extinct by new creations , but are to be regarded as their descendants through contin- ued reproduction . " A well - known French botanist , M. Lecoq , writes in 1854 ( Etudes sur ...
xxvi 페이지
... living at any time to be the result of the gradual modification of pre - existing species a hypothesis which , though un- . proven , and sadly damaged by some of its supporters , is yet the only one to which physiology lends any ...
... living at any time to be the result of the gradual modification of pre - existing species a hypothesis which , though un- . proven , and sadly damaged by some of its supporters , is yet the only one to which physiology lends any ...
9 페이지
... of structure , whether extremely slight or strongly marked , which appear amongst many individuals living together , may be considered as the indefinite effects of the conditions of life on. CHAP . I. ] VARIATION UNDER DOMESTICATION . 9.
... of structure , whether extremely slight or strongly marked , which appear amongst many individuals living together , may be considered as the indefinite effects of the conditions of life on. CHAP . I. ] VARIATION UNDER DOMESTICATION . 9.
14 페이지
... living . " Hairless dogs have imperfect teeth ; long - haired and coarse - haired animals are apt to have , as is asserted , long or many horns ; pigeons with feathered feet have skin between their outer toes ; pigeons with short beaks ...
... living . " Hairless dogs have imperfect teeth ; long - haired and coarse - haired animals are apt to have , as is asserted , long or many horns ; pigeons with feathered feet have skin between their outer toes ; pigeons with short beaks ...
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adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree descendants developed difficulty distinct species disuse divergence domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important increase inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank rarely Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young