The Origin of Species, Том 2Books, Incorporated, 1900 - Всего страниц: 365 |
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Стр. 289
... birds their front limbs in this precise intermediate state of " neither true arms nor true wings " ? Yet these birds hold their place victoriously in the battle for life ; for they exist in infinite numbers and of many kinds . I do ...
... birds their front limbs in this precise intermediate state of " neither true arms nor true wings " ? Yet these birds hold their place victoriously in the battle for life ; for they exist in infinite numbers and of many kinds . I do ...
Стр. 334
... birds can hardly fail to be highly effective agents in the transportation of seeds . I could give many facts showing how frequently birds of many kinds are blown by gales to vast dis- tances across the ocean . We may safely assume that ...
... birds can hardly fail to be highly effective agents in the transportation of seeds . I could give many facts showing how frequently birds of many kinds are blown by gales to vast dis- tances across the ocean . We may safely assume that ...
Стр. 356
... birds ; of these , twenty - one ( or perhaps twenty - three ) are peculiar , whereas of the eleven marine birds only two are peculiar ; and it is obvious that marine birds could arrive at those islands much more easily and fre- quently ...
... birds ; of these , twenty - one ( or perhaps twenty - three ) are peculiar , whereas of the eleven marine birds only two are peculiar ; and it is obvious that marine birds could arrive at those islands much more easily and fre- quently ...
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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