Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina vi
... fact that , with a few distinguished exceptions , bio- sociological investigations have hitherto been con- ducted ... facts quoted in the first book were given by M. Dollo , whose assistance we most gratefully acknowledge . PREFACE ...
... fact that , with a few distinguished exceptions , bio- sociological investigations have hitherto been con- ducted ... facts quoted in the first book were given by M. Dollo , whose assistance we most gratefully acknowledge . PREFACE ...
Pagina 8
... fact that the evolution of societies as well as that of organisms , is the result of the co - operation of two factors- similarity and adaptation . In biology , the similarity between organisms springing from the same stock , is due to ...
... fact that the evolution of societies as well as that of organisms , is the result of the co - operation of two factors- similarity and adaptation . In biology , the similarity between organisms springing from the same stock , is due to ...
Pagina 10
... fact , an organism ( see Die Elementarorganismen und ihre Beziehungen zu den Zellen ; Leipzig , 1890. — Studien über ... facts of biology , it is necessary to point out the complexity of the ideas of individual and organism . Boveri ...
... fact , an organism ( see Die Elementarorganismen und ihre Beziehungen zu den Zellen ; Leipzig , 1890. — Studien über ... facts of biology , it is necessary to point out the complexity of the ideas of individual and organism . Boveri ...
Pagina 23
... fact here , for in that case the organ would not have developed by transformation . Having once been formed , it would develop and improve , and this process would not necessarily have been attended by partial degeneration . 2 ...
... fact here , for in that case the organ would not have developed by transformation . Having once been formed , it would develop and improve , and this process would not necessarily have been attended by partial degeneration . 2 ...
Pagina 47
... fact , flat nails . In all the other Lemurs , only the second toe has a claw , whereas in true monkeys all the nails are flat . Finally , in the Orang the great toe often has no nail at all . We then come to limbs adapted to arboreal ...
... fact , flat nails . In all the other Lemurs , only the second toe has a claw , whereas in true monkeys all the nails are flat . Finally , in the Orang the great toe often has no nail at all . We then come to limbs adapted to arboreal ...
Alte ediții - Afișează-le pe toate
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Evolution by Atrophy in Biology and Sociology Jean Demoor,Jean Massart,Emile Vandervelde Vizualizare completă - 1899 |
Termeni și expresii frecvente
adult ancestral stages animals antheridia apical leaves appear appendages aquatic Archaeopteryx assimilative atrophy basilar leaves became become belonging bipinnated blade branches calcaneum canal cells characters chlorophyll collective property colony complete condition consists corporations Crustacea custom degeneration degenerative evolution digits disappeared embryo endopodite epipod exhibited existence exopodite female feudal floating leaves flowers foliage leaves formation formed function gland Huxley hypopod Illustrations individual instance institutions intercentrum land larval Lathyrus Aphaca leaf leaflets limbs male mammals marriage masuirs maxillipede mesonephros metatarsals modern modification muscles normal original pairs petiole phalanges pineal eye plants podite primitive Professor progressive evolution pronephros prothallus protopodite pr reduced regarded remain represent retracing Rosa rugosa rudimentary organs segment sepal slow-worm social societies sociology species stamens stem stipules stomata structure survival tarsius tendrils terminal thalamencephalon third tion traces transformation undergone useless vertebral column vertebrates vestiges wings
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