The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 9
... produced merely by the subsequent anchylosis of bones , which generally re- main separate . The complete leg of the bird ( A ) shows us at a , the femur , or thigh bone , and at b , the tibia , or lower leg bone ; but instead of the ...
... produced merely by the subsequent anchylosis of bones , which generally re- main separate . The complete leg of the bird ( A ) shows us at a , the femur , or thigh bone , and at b , the tibia , or lower leg bone ; but instead of the ...
Стр. 13
... producing effects which are not the effects of the inferior powers . These powers and these laws are not hereby repealed , but still subsist . " Let us pause a moment . To say that it is contrary to the nature of the stone that gravity ...
... producing effects which are not the effects of the inferior powers . These powers and these laws are not hereby repealed , but still subsist . " Let us pause a moment . To say that it is contrary to the nature of the stone that gravity ...
Стр. 15
... produces it . This maxim , known by the name of the Principle of Sufficient Cause , extends likewise to events with which it is not supposed to come in contact . Even the freest will can- not evoke them without a determining impulse ...
... produces it . This maxim , known by the name of the Principle of Sufficient Cause , extends likewise to events with which it is not supposed to come in contact . Even the freest will can- not evoke them without a determining impulse ...
Стр. 28
... produce of very simple sexual organs . On the other hand , hours do not suffice to describe the structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the ...
... produce of very simple sexual organs . On the other hand , hours do not suffice to describe the structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the ...
Стр. 41
... part , and yet being able to transfer to the progeny its own characteristics in their full integrity . The simplest case of gemmation is where the parent animal produces one or more gemmules similar to itself , FISSION - GEMMATION . 41.
... part , and yet being able to transfer to the progeny its own characteristics in their full integrity . The simplest case of gemmation is where the parent animal produces one or more gemmules similar to itself , FISSION - GEMMATION . 41.
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Часто встречающиеся слова и выражения
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.