The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 26
... life solely by means of their atomic con- stitution ; that we are dealing with the still utterly unknown structure of the molecules formed by the 7 PROTISTA . 27 aggregation of atoms ; and that if 26 THE DOCTRINE OF DESCENT .
... life solely by means of their atomic con- stitution ; that we are dealing with the still utterly unknown structure of the molecules formed by the 7 PROTISTA . 27 aggregation of atoms ; and that if 26 THE DOCTRINE OF DESCENT .
Стр. 27
... structure , we must also ascribe to living cells another structure of a different order of com- plexity , and this is what we denote by organization , ” we must likewise ascribe this yet unknown combination to the Monera of Haeckel ...
... structure , we must also ascribe to living cells another structure of a different order of com- plexity , and this is what we denote by organization , ” we must likewise ascribe this yet unknown combination to the Monera of Haeckel ...
Стр. 28
... structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the interior . The man- ducatory apparatus can be rendered comprehensible only by comparison with the ...
... structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the interior . The man- ducatory apparatus can be rendered comprehensible only by comparison with the ...
Стр. 30
... structure . The class Colenterata includes the Polypes and Medusa , and in the closest connection with it stands . the interesting class of the Spongiada , especially in- structive as affording direct evidence of the doctrine of Descent ...
... structure . The class Colenterata includes the Polypes and Medusa , and in the closest connection with it stands . the interesting class of the Spongiada , especially in- structive as affording direct evidence of the doctrine of Descent ...
Стр. 31
... suckers , which , by protrusion and retraction , serve as organs of locomotion . On account of the radiate structure pre- vailing among the Echinoderms , Medusa , and Polypes , Cuvier believed them to be more nearly related , and.
... suckers , which , by protrusion and retraction , serve as organs of locomotion . On account of the radiate structure pre- vailing among the Echinoderms , Medusa , and Polypes , Cuvier believed them to be more nearly related , and.
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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
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Стр. 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...
Стр. 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.
Стр. 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.