The Doctrine of Descent and DarwinismD. Appleton, 1875 - 334 páginas |
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Página 4
... known lan- guages . And when , in the middle of last century , the two opinions , that language was invented or revealed , were sharply opposed to each other , and when Süssmilch ( 1764 ) , in contradiction to Maupertuis and Jean J ...
... known lan- guages . And when , in the middle of last century , the two opinions , that language was invented or revealed , were sharply opposed to each other , and when Süssmilch ( 1764 ) , in contradiction to Maupertuis and Jean J ...
Página 15
... known by the name of the Principle of Sufficient Cause , extends likewise to events with which it is not supposed to come in contact . Even the freest will can- not evoke them without a determining impulse . " " We must , therefore ...
... known by the name of the Principle of Sufficient Cause , extends likewise to events with which it is not supposed to come in contact . Even the freest will can- not evoke them without a determining impulse . " " We must , therefore ...
Página 37
... known , is by no means to be sought in a direct relationship , but in a remote cousinhood . The But we must draw attention , not to these connecting forms , which natural history assumes as perfectly self- evident , but to those which ...
... known , is by no means to be sought in a direct relationship , but in a remote cousinhood . The But we must draw attention , not to these connecting forms , which natural history assumes as perfectly self- evident , but to those which ...
Página 42
... , we have an illustration of the same process , only in a somewhat more complicated form . It is known that from the intestinal canal of individuals afflicted with tape - worm , issue so - called 42 THE DOCTRINE OF DESCENT .
... , we have an illustration of the same process , only in a somewhat more complicated form . It is known that from the intestinal canal of individuals afflicted with tape - worm , issue so - called 42 THE DOCTRINE OF DESCENT .
Página 69
... known in the Silurian and Devonian strata , have the legs been preserved . In these three - lobed crabs , the head , trunk , and tail distinctly ap- pear , as well as the threefold transverse division . The two composite eyes already ...
... known in the Silurian and Devonian strata , have the legs been preserved . In these three - lobed crabs , the head , trunk , and tail distinctly ap- pear , as well as the threefold transverse division . The two composite eyes already ...
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Palavras e frases frequentes
according adaptation already Ammonites Amphibians animal world apes appearance Ascidian birds body bone brain causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryo Eocene exhibit existence external facts families fauna fish formation fossil Gastrula gemmules genera genus geological Goethe grade gradually groups Haeckel heredity higher horse human hypothesis idea individual infer intermediate forms investigation islands lancelet language larva larvæ likewise linguistic lower mammals Marsupials Medusa ment merely metamorphosis modifications morphological mutability natural selection observations Oolite organisms origin ovum peculiar pedigree perfect period phase phenomena placenta plants polypes possess present primordial progenitors races regard relations remains reproduction reptiles Rütimeyer says scarcely scientific separate sexual Silurian skull species strata structure systematic terrestrial animals theory of selection tion transformation true Ungulata Ungulates varieties vertebral column Vertebrata vertebrate animals whole