The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 17
... possible , we must think of substance or matter as consisting of particles ultimately indivisible . Of these atoms , according to the present standpoint of science , we are obliged to admit as many different species as are not ...
... possible , we must think of substance or matter as consisting of particles ultimately indivisible . Of these atoms , according to the present standpoint of science , we are obliged to admit as many different species as are not ...
Стр. 21
... possible to observe the molecular motions in a crystal mechanically injured in any part , it could not be unconditionally denied that the motions , hereby excited , take place absolutely without any simul- taneous excitement of ...
... possible to observe the molecular motions in a crystal mechanically injured in any part , it could not be unconditionally denied that the motions , hereby excited , take place absolutely without any simul- taneous excitement of ...
Стр. 29
... possible by a highly developed nervous system , and the marvellously complex sensory organs combined with it , of which the eyes are especially remarkable . Independently of the generative organs , consisting of manifold parts of ...
... possible by a highly developed nervous system , and the marvellously complex sensory organs combined with it , of which the eyes are especially remarkable . Independently of the generative organs , consisting of manifold parts of ...
Стр. 50
... possible for Von Baer . It is not merely a question of those general analogies in the segregation of tissues from an indiffer- ent rudimentary mass , but of homologies in the distri- bution , form , and composition of the embryos and ...
... possible for Von Baer . It is not merely a question of those general analogies in the segregation of tissues from an indiffer- ent rudimentary mass , but of homologies in the distri- bution , form , and composition of the embryos and ...
Стр. 61
... possible only by taking the organisms which they contained as guides or clues . We , however , shall take this arrangement as our data ,. and , with the object we have in view , we shall naturally consider only those strata and rocks in ...
... possible only by taking the organisms which they contained as guides or clues . We , however , shall take this arrangement as our data ,. and , with the object we have in view , we shall naturally consider only those strata and rocks in ...
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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.