The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 29
... common with the forms harmonizing with it in the main characters of their organization ; and , secondly , by the more special characteristics , which place the animal in its Own rank and station among its kindred . own immediate ...
... common with the forms harmonizing with it in the main characters of their organization ; and , secondly , by the more special characteristics , which place the animal in its Own rank and station among its kindred . own immediate ...
Стр. 32
... common character , so variegated is the host of smaller scattered groups , and even of single species , which demand admittance to the system of the Vermes . If we attempt to describe their typical nature in a few words , it must be ...
... common character , so variegated is the host of smaller scattered groups , and even of single species , which demand admittance to the system of the Vermes . If we attempt to describe their typical nature in a few words , it must be ...
Стр. 40
... common to the highest and the lowest life , and it is only the complexity of the vital processes , together with the variety of the parts by which they are performed , that give rise to graduated diversities , -it will , of course , be ...
... common to the highest and the lowest life , and it is only the complexity of the vital processes , together with the variety of the parts by which they are performed , that give rise to graduated diversities , -it will , of course , be ...
Стр. 50
... common primordial form oes not exist for all ? " " It might , ” he finally thinks , be maintained , not without reason , that the simple cyst - like form is the common fundamental form from which all animals are developed , not merely ...
... common primordial form oes not exist for all ? " " It might , ” he finally thinks , be maintained , not without reason , that the simple cyst - like form is the common fundamental form from which all animals are developed , not merely ...
Стр. 57
... common in the Mediterranean , is in its mature condition freely movable . This definitive development is , however , pre- ceded by a sessile stage ( Fig . 7 ) , during which the body is attached to a stalk . During the larval period the ...
... common in the Mediterranean , is in its mature condition freely movable . This definitive development is , however , pre- ceded by a sessile stage ( Fig . 7 ) , during which the body is attached to a stalk . During the larval period the ...
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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.