The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, 2권A. L. Fowle, 1872 |
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... structure with that of the rock- pigeon , C. livia , whether they had descended from this spécies or from some other allied form , such as C. œnas . So , with natural species , if we look to forms very distinct , for instance to the ...
... structure with that of the rock- pigeon , C. livia , whether they had descended from this spécies or from some other allied form , such as C. œnas . So , with natural species , if we look to forms very distinct , for instance to the ...
245 페이지
... structure : now in the whole great malacostracan order , to which these crustaceans belong , no other mem- ber is as yet known to be first developed under the nau- plius - form , though many appear as zoeas ; nevertheless Müller assigns ...
... structure : now in the whole great malacostracan order , to which these crustaceans belong , no other mem- ber is as yet known to be first developed under the nau- plius - form , though many appear as zoeas ; nevertheless Müller assigns ...
327 페이지
... structure of , i . 225 . correction for aberration , i . 255 . Eyes , reduction in moles , i . 170 . F. Fabre , M. , on hymenoptera fight- ing , i . 108 . on parasitic sphex , i . 336 . on Sitaris , ii . 252 . Falconer , Dr. , on ...
... structure of , i . 225 . correction for aberration , i . 255 . Eyes , reduction in moles , i . 170 . F. Fabre , M. , on hymenoptera fight- ing , i . 108 . on parasitic sphex , i . 336 . on Sitaris , ii . 252 . Falconer , Dr. , on ...
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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 seeds Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory tion variations varieties whilst whole widely different wings