The Doctrine of Descent and DarwinismD. Appleton, 1875 - 334 من الصفحات |
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الصفحة 28
... alimentary canal are each provided with special glands . The rich psychical life , all the actions which imply intelligence , SYSTEMATIC ARRANGEMENT . 29 calculation , and perception of external 28 TIIE DOCTRINE OF DESCENT .
... alimentary canal are each provided with special glands . The rich psychical life , all the actions which imply intelligence , SYSTEMATIC ARRANGEMENT . 29 calculation , and perception of external 28 TIIE DOCTRINE OF DESCENT .
الصفحة 29
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. SYSTEMATIC ARRANGEMENT . 29 calculation , and perception of external situation , are rendered possible by a highly developed nervous system , and the marvellously complex sensory organs combined ...
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. SYSTEMATIC ARRANGEMENT . 29 calculation , and perception of external situation , are rendered possible by a highly developed nervous system , and the marvellously complex sensory organs combined ...
الصفحة 33
... main portion of the nervous system is contained . It is thus established that the systematic classification of the animal kingdom is based on certain prominent characteristics of form and internal structure ; and it is.
... main portion of the nervous system is contained . It is thus established that the systematic classification of the animal kingdom is based on certain prominent characteristics of form and internal structure ; and it is.
الصفحة 34
... systematic diagnosis , may be displayed in full perfection . But this is imme- diately succeeded by a further observation , that of gra- dations within the type . When we previously compared the polype and the bee , and were obliged to ...
... systematic diagnosis , may be displayed in full perfection . But this is imme- diately succeeded by a further observation , that of gra- dations within the type . When we previously compared the polype and the bee , and were obliged to ...
الصفحة 35
... systematic subdivisions , descending even to species according to the criterion of anatomical perfection ; and these found expression only in diagrams of highly ramified trees . Branches ap- peared which terminated after a brief ...
... systematic subdivisions , descending even to species according to the criterion of anatomical perfection ; and these found expression only in diagrams of highly ramified trees . Branches ap- peared which terminated after a brief ...
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عبارات ومصطلحات مألوفة
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
مقاطع مشهورة
الصفحة 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...
الصفحة 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.
الصفحة 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.