The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 2
... indignantly if required to believe that anything not entirely natural occurred in the most complicated machine , in the most elaborate product of the chemical retort , or in the strangest results 2 THE DOCTRINE OF DESCENT .
... indignantly if required to believe that anything not entirely natural occurred in the most complicated machine , in the most elaborate product of the chemical retort , or in the strangest results 2 THE DOCTRINE OF DESCENT .
Стр. 22
... occur in the elements , that is to say , in the atoms . If we only con- sider that we are as little capable of knowing that the falling stone feels nothing , as that it does feel ; it is fully open to us to decide , in accordance with ...
... occur in the elements , that is to say , in the atoms . If we only con- sider that we are as little capable of knowing that the falling stone feels nothing , as that it does feel ; it is fully open to us to decide , in accordance with ...
Стр. 41
... occurs that the individual discharges the superfluity of material obtained at a definite part of the body , and forms a bud or gemmule . We are already acquainted with reproduction by gemmation in the simplest organ- ism , the cell ...
... occurs that the individual discharges the superfluity of material obtained at a definite part of the body , and forms a bud or gemmule . We are already acquainted with reproduction by gemmation in the simplest organ- ism , the cell ...
Стр. 46
... occurs in the evolutionary cycle or alternate generation of the genus Distoma of the Entozoa . In the ventral cavity of one larval genera- tion arise cell - spheres , or germs , which develope into the second generation - the Cercaria ...
... occurs in the evolutionary cycle or alternate generation of the genus Distoma of the Entozoa . In the ventral cavity of one larval genera- tion arise cell - spheres , or germs , which develope into the second generation - the Cercaria ...
Стр. 62
... occurring by means of rain , rivers , sea and other natural forces which have taken place in historic times , in ... occur in the Diluvial strata is extinct , much more still exists , these two formations are inseparably intermingled ...
... occurring by means of rain , rivers , sea and other natural forces which have taken place in historic times , in ... occur in the Diluvial strata is extinct , much more still exists , these two formations are inseparably intermingled ...
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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.