The Origin of Species, Том 2Books, Incorporated, 1900 - Всего страниц: 365 |
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Стр. 236
... classification , explained on the theory of descent with modification - Classification of varieties - Descent always used in classification - Analogical or adaptive characters - Affinities , gen- eral , complex and radiating ...
... classification , explained on the theory of descent with modification - Classification of varieties - Descent always used in classification - Analogical or adaptive characters - Affinities , gen- eral , complex and radiating ...
Стр. 371
... Classification , Groups Subordinate to Groups - Natural System - Rules and Difficulties in Classification , explained on the Theory of Descent with Modification - Classification of Varieties - Descent always used in Classi- fication ...
... Classification , Groups Subordinate to Groups - Natural System - Rules and Difficulties in Classification , explained on the Theory of Descent with Modification - Classification of Varieties - Descent always used in Classi- fication ...
Стр. 377
... classification ; namely , from the natural system being genealogical in its ar- rangement . Our classifications are often plainly influenced by chains of affinities . Nothing can be easier than to define a number of char- acters common ...
... classification ; namely , from the natural system being genealogical in its ar- rangement . Our classifications are often plainly influenced by chains of affinities . Nothing can be easier than to define a number of char- acters common ...
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Часто встречающиеся слова и выражения
adapted admit affinity ancient animals appear Archipelago areas become believe belonging birds Cambrian characters classification climate closely allied species common continent creation crustaceans degree deposits descent with modification developed difficulty distant distinct species domestic doubt embryo Europe existing extinct facts faunas 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 INDIANENSIS individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammæ mammals manner marine Marsupials MDCCCXX migration modified descendants mongrels mountains natural selection naturalists nearly oceanic islands offspring parent peculiar perfect pistil plants pollen present probably produced progenitor quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds SIGILLUM Silurian South America stage stamens sterility structure successive suppose terrestrial tertiary theory of natural tion variations varieties VERITAS whole widely different