The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 2
... progress . Marvellous as are the attain- ments of our generation , whether in the domain of individual sciences , or in the sphere of commerce and industry , it is scarcely less wonderful how little certain or advanced is the opinion of ...
... progress . Marvellous as are the attain- ments of our generation , whether in the domain of individual sciences , or in the sphere of commerce and industry , it is scarcely less wonderful how little certain or advanced is the opinion of ...
Стр. 19
... progress of scientific development raises it almost to a certainty . When it is seen how certain phenomena — such as the evolution of animal heat , which it was formerly believed could be explained only by vital force - are now ascribed ...
... progress of scientific development raises it almost to a certainty . When it is seen how certain phenomena — such as the evolution of animal heat , which it was formerly believed could be explained only by vital force - are now ascribed ...
Стр. 49
... progress of development it passes through stages which are per- manent in the series of inferior animals . On the other hand , he positively repudiated the asser- tion that the embryos of the higher types actually pass through forms ...
... progress of development it passes through stages which are per- manent in the series of inferior animals . On the other hand , he positively repudiated the asser- tion that the embryos of the higher types actually pass through forms ...
Стр. 77
... progress , " he says , " is displayed in the circumstance that it is the lowest of the Echina , the Regularæ and Endocyclicæ , which pri- marily appear , first in the form of the Tessellæ , then as Cidarida ; while the most perfect ...
... progress , " he says , " is displayed in the circumstance that it is the lowest of the Echina , the Regularæ and Endocyclicæ , which pri- marily appear , first in the form of the Tessellæ , then as Cidarida ; while the most perfect ...
Стр. 79
... progress of development is manifest in the organic world , including the vegetal kingdom . No fossil animal controverts the system . On the contrary , the most varied adjustments and accommodations are afforded by the antediluvian ...
... progress of development is manifest in the organic world , including the vegetal kingdom . No fossil animal controverts the system . On the contrary , the most varied adjustments and accommodations are afforded by the antediluvian ...
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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.