The Doctrine of Descent and DarwinismD. Appleton, 1875 - 334 من الصفحات |
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الصفحة 8
... anatomy , even more than fifty years ago , had advanced so far in the accumulation of endless details that Cuvier ... COMPARATIVE ANATOMY AND EVOLUTION . A Cl B a 9 8 THE DOCTRINE OF DESCENT .
... anatomy , even more than fifty years ago , had advanced so far in the accumulation of endless details that Cuvier ... COMPARATIVE ANATOMY AND EVOLUTION . A Cl B a 9 8 THE DOCTRINE OF DESCENT .
الصفحة 9
... comparative anatomy the confirmation , and frequently the possibility of interpretation . The wing of a bird , in its individual parts , may be traced back without difficulty to the anterior extremities of a reptile or a mammal . But ...
... comparative anatomy the confirmation , and frequently the possibility of interpretation . The wing of a bird , in its individual parts , may be traced back without difficulty to the anterior extremities of a reptile or a mammal . But ...
الصفحة 10
... comparative anatomy is incapable of explaining why man possesses three little bones in the auditory apparatus , the bird only one . The history of development shows that out of the ma- terial which in man is applied to the formation of ...
... comparative anatomy is incapable of explaining why man possesses three little bones in the auditory apparatus , the bird only one . The history of development shows that out of the ma- terial which in man is applied to the formation of ...
الصفحة 72
... comparative anatomy has proved with certainty , a development of the shark - like fishes , if not decidedly of a higher grade . The Ganoids , there- fore , presuppose the shark . The carboniferous period owes its name to the enor- mous ...
... comparative anatomy has proved with certainty , a development of the shark - like fishes , if not decidedly of a higher grade . The Ganoids , there- fore , presuppose the shark . The carboniferous period owes its name to the enor- mous ...
الصفحة 83
... Comparative Anatomy , almost independently of systematic Zoology , took a prosperous course , and became far richer in ideas than this descriptive Natural History . One of its maxims , however , was accepted without examination- the ...
... Comparative Anatomy , almost independently of systematic Zoology , took a prosperous course , and became far richer in ideas than this descriptive Natural History . One of its maxims , however , was accepted without examination- the ...
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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.