Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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... - dition . This kind of pectoral sacrum implied the fusion of a number of vertebrae , and involved a consequent degeneration of the muscles which in earlier Pterosaurians caused 62 UNIVERSALITY OF DEGENERATIVE EVOLUTION 31.
... - dition . This kind of pectoral sacrum implied the fusion of a number of vertebrae , and involved a consequent degeneration of the muscles which in earlier Pterosaurians caused 62 UNIVERSALITY OF DEGENERATIVE EVOLUTION 31.
... vertebrae are functional , whereas in man they have degenerated . Of one entire section of the human vertebral column - the tail - so fully developed in the majority of other vertebrates , only a vestige now remains . Other rudimentary ...
Pagina 141
... vertebrae of vertebrates will show the existence of rudimentary organs throughout the whole group , each type and each individual among the vertebrates exhibiting special degeneration . In order to briefly demonstrate this point , take ...
... vertebrae of vertebrates will show the existence of rudimentary organs throughout the whole group , each type and each individual among the vertebrates exhibiting special degeneration . In order to briefly demonstrate this point , take ...
... vertebrae . ( b ) Three dorsal vertebrae . ( c ) Five lumbar vertebrae . ( d ) Three sacral vertebrae . ( e ) Six coccygeal vertebrae . Each one of these vertebrae exhibits important modifications , and shows signs of degeneration . The ...
Pagina 143
... vertebrae , each consisting of a centrum , neurapophyses , and short bicipital ribs . The first three vertebrae are the true sacrals , as these alone support the basin ; the two following are really caudal vertebrae in process of fusion ...
... vertebrae , each consisting of a centrum , neurapophyses , and short bicipital ribs . The first three vertebrae are the true sacrals , as these alone support the basin ; the two following are really caudal vertebrae in process of fusion ...
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
adaptation adult animals antheridia apical leaves appear appendages aquatic assimilative atrophy basilar leaves become biology blade branches branchial arches Bruges calcaneum canal ceased cells characters chlorophyll collective property colony complete condition consists corporations Court Crustacea custom degeneration degenerative evolution digits disappeared endopodite epipod examples exhibited existence exopodite female feudal flowers foliage leaves formed function Huxley hypopod Illustrations individual instance institutions intercentrum land larvæ larval leaf leaflets limbs lost male mammals marriage masuirs ment mesonephros metatarsals modern modifications muscles normal nutrition original pairs persist petiole phalanges pineal eye plants podite possess posterior primitive Professor pronephros prothallus protopodite reappear reduced regarded remain represent result retracing Rosa rugosa rudimentary organs seedling segment sepal slow-worm social societies sociology species spines stamens stem stipules stomata structure survival tarsius tendrils terminal thalamencephalon tion traces transformation useless vertebral column vertebrates vestiges wings young
Pasaje populare
Pagina ii - GRAHAM, MA, Queen's College, Belfast. $1.75. 69. MAN AND THE GLACIAL PERIOD. By Professor G. FREDERICK WRIGHT, DD, Oberlin Theological Seminary. With 108 Illustrations and 3 Maps.