The Origin of Species, Том 2Books, Incorporated, 1900 - Всего страниц: 365 |
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Стр. 277
... geological formations of each re- gion are almost invariably intermittent ; that is , have not fol- lowed each other in close sequence . Scarcely any fact struck me more when examining many hundred miles of ... GEOLOGICAL RECORD 277.
... geological formations of each re- gion are almost invariably intermittent ; that is , have not fol- lowed each other in close sequence . Scarcely any fact struck me more when examining many hundred miles of ... GEOLOGICAL RECORD 277.
Стр. 287
... geological record would then be less perfect . It may be doubted whether the duration of any one great pe riod of subsidence over the whole or part of the archipelago , to- gether with a contemporaneous ... GEOLOGICAL RECORD 287.
... geological record would then be less perfect . It may be doubted whether the duration of any one great pe riod of subsidence over the whole or part of the archipelago , to- gether with a contemporaneous ... GEOLOGICAL RECORD 287.
Стр. 295
... geological formations many links between the species which now exist and which formerly existed , we do not find infinitely numerous fine ... Geological Succession of Organic Beings On THE IMPERFECTION OF THE GEOLOGICAL RECORD 295.
... geological formations many links between the species which now exist and which formerly existed , we do not find infinitely numerous fine ... Geological Succession of Organic Beings On THE IMPERFECTION OF THE GEOLOGICAL RECORD 295.
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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