Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 56
... present day . Moreover , in order to promote prehension by the foot , the tibia and fibula in prehensile - footed marsupials may turn upon one another , as is the case with our radius and ulna . With the tarsius it is quite otherwise ...
... present day . Moreover , in order to promote prehension by the foot , the tibia and fibula in prehensile - footed marsupials may turn upon one another , as is the case with our radius and ulna . With the tarsius it is quite otherwise ...
Pagina 79
... present to those adapted from leaves . In Cobaea scandens the first two leaves of the seedling usually terminate in a leaflet ( fig . 43 , A ) ; the leaves which come after are much finer and are modified into tendrils ( fig . 43 , c ) ...
... present to those adapted from leaves . In Cobaea scandens the first two leaves of the seedling usually terminate in a leaflet ( fig . 43 , A ) ; the leaves which come after are much finer and are modified into tendrils ( fig . 43 , c ) ...
Pagina 84
... into very thin seg- ments which in some cases present a hair - like appearance . The Ranunculus is a good example of this . Besides the many species found on moors and culti- vated 84 UNIVERSALITY OF DEGENERATIVE EVOLUTION PAGE.
... into very thin seg- ments which in some cases present a hair - like appearance . The Ranunculus is a good example of this . Besides the many species found on moors and culti- vated 84 UNIVERSALITY OF DEGENERATIVE EVOLUTION PAGE.
Pagina 102
... present system in Russia through the following principal stages : - 1. The joint use of land by the members of one family group ( pechische ) , corresponding to the zadruga of the Southern Servians , and sometimes comprised of more than ...
... present system in Russia through the following principal stages : - 1. The joint use of land by the members of one family group ( pechische ) , corresponding to the zadruga of the Southern Servians , and sometimes comprised of more than ...
Pagina 117
... present condition of knowledge , however , it is quite impossible — particularly as regards plants to prove this theory universally . It is to be hoped , however , that future researches will ultimately succeed in establishing it . In ...
... present condition of knowledge , however , it is quite impossible — particularly as regards plants to prove this theory universally . It is to be hoped , however , that future researches will ultimately succeed in establishing it . In ...
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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