The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 18
... is , to take refuge in unknown forces quite extraneous to matter , and to admit that the self - same particle can vary its nature , according to whether it be internal or external to an organism 18 THE DOCTRINE OF DESCENT .
... is , to take refuge in unknown forces quite extraneous to matter , and to admit that the self - same particle can vary its nature , according to whether it be internal or external to an organism 18 THE DOCTRINE OF DESCENT .
Стр. 19
... external to an organism , is , in other words , to affirm a miracle . If this is weighed against the physical view , " which in its perfection reduces every organic process to a problem of pure mechanics , " it may be done in the ...
... external to an organism , is , in other words , to affirm a miracle . If this is weighed against the physical view , " which in its perfection reduces every organic process to a problem of pure mechanics , " it may be done in the ...
Стр. 22
... external ex- citation dwindle into the scarce perceptible motions of the simplest protoplasmic animalculæ , it is evident that there can be no question here of either consciousness or will . We cannot then separate the idea of those ...
... external ex- citation dwindle into the scarce perceptible motions of the simplest protoplasmic animalculæ , it is evident that there can be no question here of either consciousness or will . We cannot then separate the idea of those ...
Стр. 25
... external influences and excitations . In the lower animals the phenomena of life assume a more vegetal character , and in many groups of lower beings , which Haeckel has recently comprised under the name Protista , we see the pro ...
... external influences and excitations . In the lower animals the phenomena of life assume a more vegetal character , and in many groups of lower beings , which Haeckel has recently comprised under the name Protista , we see the pro ...
Стр. 28
... 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 ... external situation , are rendered 28 THE DOCTRINE OF DESCENT .
... 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 ... external situation , are rendered 28 THE DOCTRINE OF DESCENT .
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according adaptation already Ammonites Amphibians animal world apes appearance Ascidian become birds brain carboniferous causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryonic Eocene exhibit existence 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 Insectivora intermediate forms islands lancelet language larva larvæ likewise linguistic 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 strata structure systematic terrestrial animals Tertiary theory of selection tion transformation transition true Ungulata Ungulates varieties 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 - 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.