Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina vii
... amphibius , Protopterus annec- tens , Lepidosiren 43 Limbs adapted to a terrestrial life 43 § 2. Transformation of homodynamic organs in the indivi- dual ( metameric appendages ) 7 4 . 1. Adaptation to walking on two legs ( vii.
... amphibius , Protopterus annec- tens , Lepidosiren 43 Limbs adapted to a terrestrial life 43 § 2. Transformation of homodynamic organs in the indivi- dual ( metameric appendages ) 7 4 . 1. Adaptation to walking on two legs ( vii.
Pagina xi
... appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Fabu , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . · ( 1 ) ...
... appendages in deep - sea hermit crabs 2. Plants . ( 1 ) Hermaphrodite flowers in Melandryum . ( 2 ) Branches of Colletia cruciata , Crataegus , Vicia Fabu , Sempervivum , Veronica , etc. Section II . Rudimentary institutions . · ( 1 ) ...
Pagina 30
... appendages of the cray - fish form an extremely interesting study of this kind . The parts of a bone do not unite after fracture . In that case a com- pleted joint with cartilage ligament and synovial membrane may be formed in the ...
... appendages of the cray - fish form an extremely interesting study of this kind . The parts of a bone do not unite after fracture . In that case a com- pleted joint with cartilage ligament and synovial membrane may be formed in the ...
Pagina 31
... appendage of the 3rd abdomiral Auviatilis . Left Take first the abdominal segments , segment of the they carry appendages ( fig . 3 ) formed female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , exopodite ; en ...
... appendage of the 3rd abdomiral Auviatilis . Left Take first the abdominal segments , segment of the they carry appendages ( fig . 3 ) formed female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , exopodite ; en ...
Pagina 32
... appendage which has degenerated is the podobranch , which has completely disappeared . The reason is obvious ; these ap ... appendages of the sixth abdominal segment are greatly modified into a caudal fin ( fig . 4 ) . This also exhibits ...
... appendage which has degenerated is the podobranch , which has completely disappeared . The reason is obvious ; these ap ... appendages of the sixth abdominal segment are greatly modified into a caudal fin ( fig . 4 ) . This also exhibits ...
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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