The Doctrine of Descent and DarwinismD. Appleton, 1896 - 334 páginas |
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Página 26
... life solely by means of their atomic con- stitution ; that we are dealing with the still utterly unknown structure of the molecules formed by the aggregation of atoms ; and that if Brücke says , 26 THE DOCTRINE OF DESCENT .
... life solely by means of their atomic con- stitution ; that we are dealing with the still utterly unknown structure of the molecules formed by the aggregation of atoms ; and that if Brücke says , 26 THE DOCTRINE OF DESCENT .
Página 27
... structure , we must also ascribe to living cells another structure of a different order of com- plexity , and this is what we denote by organization , ” we must likewise ascribe this yet unknown combination to the Monera of Haeckel ...
... structure , we must also ascribe to living cells another structure of a different order of com- plexity , and this is what we denote by organization , ” we must likewise ascribe this yet unknown combination to the Monera of Haeckel ...
Página 28
... structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the interior . The man- ducatory apparatus can be rendered comprehensible only by comparison with the ...
... structure of a bee . Even externally , its body , which possesses so highly complicated a structure , pro- mises a rich development of the interior . The man- ducatory apparatus can be rendered comprehensible only by comparison with the ...
Página 30
... structure . The class Colenterata includes the Polypes and Medusæ , and in the closest connection with it stands the interesting class of the Spongiadæ , especially in- structive as affording direct evidence of the doctrine of Descent ...
... structure . The class Colenterata includes the Polypes and Medusæ , and in the closest connection with it stands the interesting class of the Spongiadæ , especially in- structive as affording direct evidence of the doctrine of Descent ...
Página 31
... protrusion and retraction , serve as organs of locomotion . On account of the radiate structure pre- vailing among the Echinoderms , Medusæ , and Polypes , Cuvier believed them to be more nearly related , and. TYPES AND FAMILIES . 31 ·
... protrusion and retraction , serve as organs of locomotion . On account of the radiate structure pre- vailing among the Echinoderms , Medusæ , and Polypes , Cuvier believed them to be more nearly related , and. TYPES AND FAMILIES . 31 ·
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Términos y frases comunes
adaptation Agassiz already Ammonites Amphibians animal world Annelids apes appearance Articulata Ascidians atoms birds body bone carboniferous causes character characteristics comparative anatomy complete connection Cuvier Darwin definite derivation divergence doctrine of Descent Echinoderms embryo Eocene exhibit existence external facts families fauna fish Foraminifera formation fossil Ganoids gemmules genera genus geological Goethe gradually groups Haeckel heredity higher hypothesis idea individual infer intermediate forms investigation of nature lancelet language larva larvæ likewise limits Linnæus lower mammals Marsupials Medusa ment merely morphological motion mutability natural selection naturalists observation Oolite organisms origin ovum peculiar pedigree perfect period phase phenomena placenta plants polype portion possess present primordial produced races regard relations remains reproduction reptiles says sexual sexual reproduction Silurian skull so-called species sponges strata structure systematic terrestrial animals theory tion transformation true varieties various vertebral column Vertebrata vertebrate animals whole