The Doctrine of Descent and DarwinismD. Appleton, 1875 - 334 من الصفحات |
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الصفحة 61
... 5. Jurassic formation or Oolite . Upper White Jura ( Malm ) . Middle Brown Jura ( Dogger ) . Lower Black Jura ( Lias ) . of English Series . See p . 307 of Page's Ad- vanced Text Book . 6. Triassic formation or New Red Sandstone . Keuper ...
... 5. Jurassic formation or Oolite . Upper White Jura ( Malm ) . Middle Brown Jura ( Dogger ) . Lower Black Jura ( Lias ) . of English Series . See p . 307 of Page's Ad- vanced Text Book . 6. Triassic formation or New Red Sandstone . Keuper ...
الصفحة 64
... oolitic strata appear more definite , mostly lying regularly over each other in distinct deposits , more rarely , as in the Alps , raised up by later dislocations . The rocks themselves , betray that the depositions took place in wide ...
... oolitic strata appear more definite , mostly lying regularly over each other in distinct deposits , more rarely , as in the Alps , raised up by later dislocations . The rocks themselves , betray that the depositions took place in wide ...
الصفحة 73
... Oolite , and Cretaceous formations , are summed up as mesozoic . The Trilobites , the mailed Ganoids , and others ... oolitic strata , that this era must have been , on the whole , far more favourable to the development of animal ...
... Oolite , and Cretaceous formations , are summed up as mesozoic . The Trilobites , the mailed Ganoids , and others ... oolitic strata , that this era must have been , on the whole , far more favourable to the development of animal ...
الصفحة 74
... oolitic strata are mostly depositions which have taken place without dis- turbance . saura . And so it proves . The Placoids and Ganoids hitherto predominating in the ocean almost without a foe , now found overwhelming enemies in the ...
... oolitic strata are mostly depositions which have taken place without dis- turbance . saura . And so it proves . The Placoids and Ganoids hitherto predominating in the ocean almost without a foe , now found overwhelming enemies in the ...
الصفحة 75
... Oolite of England and the upper Oolite of the Purbeck strata . The ornithic animals of the chalk , are more remark- able intermediate forms than the Archæopteryx , and these by their hour - glass - shaped vertebrate bodies are directly ...
... Oolite of England and the upper Oolite of the Purbeck strata . The ornithic animals of the chalk , are more remark- able intermediate forms than the Archæopteryx , and these by their hour - glass - shaped vertebrate bodies are directly ...
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عبارات ومصطلحات مألوفة
according adaptation already Ammonites Amphibians animal world apes appearance Ascidian become birds brain causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryonic Eocene exhibit external facts families fauna fish formation fossil Ganoids Gastrula genera genus geological Goethe grade gradually groups Haeckel heredity higher horse human hypothesis idea individual infer intermediate forms islands lancelet language larva larvæ likewise linguistic Linnæus lower mammals Marsupials Medusa ment merely metamorphosis modifications morphological mutability natural selection observation Oolite organisms origin peculiar pedigree perfect period phase phenomena placenta plants polypes possess present primordial progenitors races relations remains reproduction reptiles resemblance Rütimeyer says scarcely scientific separate sexual Silurian skull species sponges strata structure systematic terrestrial animals Tertiary theory of selection tion transformation transition true Ungulata Ungulates varieties vegetal vertebral column Vertebrata vertebrate animals whole
مقاطع مشهورة
الصفحة 162 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.18 Darwin always knew that his views would be controversial. A few days before The Origin of Species appeared, Darwin wrote, in a letter to Wallace, 'God knows what...
الصفحة 160 - I had not formerly sufficiently considered the existence of many structures which appear to be, as far as we can judge, neither beneficial nor injurious ; and this I believe to be one of the greatest oversights as yet detected in my work.
الصفحة 160 - Na'geli on plants, and the remarks by various authors with respect to animals, more especially those recently made by Professor Broca, that in the earlier editions of my Origin of Species I perhaps attributed too much to the action of natural selection or the survival of the fittest.