The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 16
... closely defined above , is no real knowledge . In the attempt to comprehend the constant , to which the mutations in * Du gleichst dem Geist , den du begreifst . the material world may be traced back , we stumble 16 THE DOCTRINE OF ...
... closely defined above , is no real knowledge . In the attempt to comprehend the constant , to which the mutations in * Du gleichst dem Geist , den du begreifst . the material world may be traced back , we stumble 16 THE DOCTRINE OF ...
Стр. 32
... closely with the next division . In this , that of the Vermes , the systematizer of the old school finds his real difficulty ; in so many ways do they deviate from each other , so great is the distance between the lower and the higher ...
... closely with the next division . In this , that of the Vermes , the systematizer of the old school finds his real difficulty ; in so many ways do they deviate from each other , so great is the distance between the lower and the higher ...
Стр. 54
... higher animals are transiently more closely related to the complete and definitive con- ditions of the lower animal - forms , at least of the same family ; whence arose the fixed idea that the embryo 54 THE DOCTRINE OF DESCENT .
... higher animals are transiently more closely related to the complete and definitive con- ditions of the lower animal - forms , at least of the same family ; whence arose the fixed idea that the embryo 54 THE DOCTRINE OF DESCENT .
Стр. 87
... closely connected together , and diverging from one another neither in the form nor in the composition of their structure , but simply in the ultimate structural pecu- liarities of some of their parts . " " Individuals , as repre ...
... closely connected together , and diverging from one another neither in the form nor in the composition of their structure , but simply in the ultimate structural pecu- liarities of some of their parts . " " Individuals , as repre ...
Стр. 89
... closely adhered , two things are obviously required of an individual as belonging to a species : in the first place , a certain degree of resemblance or approximate similarity of character ; and secondly , a kindred connection by the ...
... closely adhered , two things are obviously required of an individual as belonging to a species : in the first place , a certain degree of resemblance or approximate similarity of character ; and secondly , a kindred connection by 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.