The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 81
... perfect organisms , and of applying in the develop- ment of the last reminiscences of the first . As worthless as the formula of embryonic types is another , invented by Agassiz , for the shapes in which , in some fossil groups ...
... perfect organisms , and of applying in the develop- ment of the last reminiscences of the first . As worthless as the formula of embryonic types is another , invented by Agassiz , for the shapes in which , in some fossil groups ...
Стр. 105
... - eminently belongs to the earth . Embryology receives its due in a general propo- sition . " Animals perfect themselves gradually , adding organ to organ in the self - same manner as the individual animal is perfected . " But in Man , as.
... - eminently belongs to the earth . Embryology receives its due in a general propo- sition . " Animals perfect themselves gradually , adding organ to organ in the self - same manner as the individual animal is perfected . " But in Man , as.
Стр. 109
... perfect truth , the rings which in the insect are ranged from the head to the tail , presented themselves , like the vegetal organs , as mere modifications of one and the same rudimentary organ . There , the leaf in the abstract , the ...
... perfect truth , the rings which in the insect are ranged from the head to the tail , presented themselves , like the vegetal organs , as mere modifications of one and the same rudimentary organ . There , the leaf in the abstract , the ...
Стр. 110
... perfect over a less perfect animal . This consists in the deci- siveness of its parts , the security that none can be put or taken for the other ; that each is destined for its function , and remains constant to it for ever . " Now ...
... perfect over a less perfect animal . This consists in the deci- siveness of its parts , the security that none can be put or taken for the other ; that each is destined for its function , and remains constant to it for ever . " Now ...
Стр. 113
... perfect organic beings , among which we include Fishes , Amphi- bians , Birds , Mammals ( and at the head of the latter , Man ) , to be formed according to an archetype , which merely fluctuates more or less in its very persistent parts ...
... perfect organic beings , among which we include Fishes , Amphi- bians , Birds , Mammals ( and at the head of the latter , Man ) , to be formed according to an archetype , which merely fluctuates more or less in its very persistent parts ...
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Часто встречающиеся слова и выражения
according adaptation already Ammonites Amphibians animal world apes appearance Ascidian become birds brain causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryonic Eocene exhibit 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 intermediate forms islands lancelet language larva larvæ likewise linguistic Linnæus 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 sponges strata structure systematic terrestrial animals Tertiary theory of selection tion transformation transition true Ungulata Ungulates varieties vegetal 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 - I had not formerly sufficiently considered the existence of many structures which appear to be, as far as we can judge, neither beneficial nor injurious ; and this I believe to be one of the greatest oversights as yet detected in my work.
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.