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 232
... wing of the bat , should all be constructed on the same pattern , and should include similar bones , in the same relative positions ? How curious it is , to give a subordinate though striking instance , that the hind - feet of the ...
... wing of the bat , should all be constructed on the same pattern , and should include similar bones , in the same relative positions ? How curious it is , to give a subordinate though striking instance , that the hind - feet of the ...
Página 234
... wing ; yet all these modifications would not tend to alter the framework of the bones or the rela- tive connection of the parts . If we suppose that an early progenitor - the archetype as it may be called— of all mammals , birds , and ...
... wing ; yet all these modifications would not tend to alter the framework of the bones or the rela- tive connection of the parts . If we suppose that an early progenitor - the archetype as it may be called— of all mammals , birds , and ...
Página 235
... wing and the leg of a bat , used as they are for such totally different purposes , namely flying and walking ? Why should one crustacean , which has an extremely complex mouth formed of many parts , consequently always have fewer legs ...
... wing and the leg of a bat , used as they are for such totally different purposes , namely flying and walking ? Why should one crustacean , which has an extremely complex mouth formed of many parts , consequently always have fewer legs ...
Página 242
... wing of a bat , and fin of a porpoise , are related to similar con- ditions of life . No one supposes that the stripes on the whelp of a lion , or the spots on the young blackbird , are of any use to these animals . The case , however ...
... wing of a bat , and fin of a porpoise , are related to similar con- ditions of life . No one supposes that the stripes on the whelp of a lion , or the spots on the young blackbird , are of any use to these animals . The case , however ...
Página 255
... wing " may safely be considered as a rudimentary digit , and in some species the whole wing is so far rudimentary that ... wings . Rudimentary organs sometimes retain their potentiality : this occasionally occurs with the mam- mæ of male ...
... wing " may safely be considered as a rudimentary digit , and in some species the whole wing is so far rudimentary that ... wings . Rudimentary organs sometimes retain their potentiality : this occasionally occurs with the mam- mæ of male ...
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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