The Doctrine of Descent and DarwinismD. Appleton, 1875 - 334 páginas |
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Página 4
... follows from the nature of these beginnings , that language is the natural expression of the spirit of a people ; that it does not stand still , but is for ever in process of transformation . The science of language , with its great ...
... follows from the nature of these beginnings , that language is the natural expression of the spirit of a people ; that it does not stand still , but is for ever in process of transformation . The science of language , with its great ...
Página 18
... follows , in the question put by another sound and thoughtful physiologist , A. Fick " Are the charac- teristics of such a particle , as already explained , applicable and effective during the period of its sojourn in an organism ? Thus ...
... follows , in the question put by another sound and thoughtful physiologist , A. Fick " Are the charac- teristics of such a particle , as already explained , applicable and effective during the period of its sojourn in an organism ? Thus ...
Página 37
... follow as a matter of course . For if the figure be correct , every ramification of the branches must include species diverging very slightly from the species standing in the lowest portions of the bough from which it branches off . And ...
... follow as a matter of course . For if the figure be correct , every ramification of the branches must include species diverging very slightly from the species standing in the lowest portions of the bough from which it branches off . And ...
Página 52
... follows their separation into two cell - layers , or membranes . Respecting the deriva- tion of the third or middle germinal lamina , and the share of the two primitive laminæ in its formation , observers are not agreed . Only from this ...
... follows their separation into two cell - layers , or membranes . Respecting the deriva- tion of the third or middle germinal lamina , and the share of the two primitive laminæ in its formation , observers are not agreed . Only from this ...
Página 55
... follows ? These quadrupeds and bipeds have much embryonic resemblance , for their cranial bones are separate ; like ourselves during the first four or five days of hatching , they are without a beak ; their extremities are tolerably ...
... follows ? These quadrupeds and bipeds have much embryonic resemblance , for their cranial bones are separate ; like ourselves during the first four or five days of hatching , they are without a beak ; their extremities are tolerably ...
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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