Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 2
... YOUNG , College of New Jersey . With 83 Illustrations . $ 2.00 . 35. VOLCANOES ; What they Are and What they Teach . By Professor JOHN W. JUDD , F. R. S. , Royal School of Mines . With 96 Illustrations . $ 2.00 . 36. SUICIDE : An Essay ...
... YOUNG , College of New Jersey . With 83 Illustrations . $ 2.00 . 35. VOLCANOES ; What they Are and What they Teach . By Professor JOHN W. JUDD , F. R. S. , Royal School of Mines . With 96 Illustrations . $ 2.00 . 36. SUICIDE : An Essay ...
Pagina 13
... young plants are insufficiently developed to main- tain themselves , the mother - plant continues to supply them with nourishment . As soon , however , as the young shoot can dispense with this support , the runner atrophies , and the ...
... young plants are insufficiently developed to main- tain themselves , the mother - plant continues to supply them with nourishment . As soon , however , as the young shoot can dispense with this support , the runner atrophies , and the ...
Pagina 28
... young organ is born under new conditions that it exhibits new characters . This is not necessarily the case with animals . In an animal organism the separation of the young tissues from the old is not so noticeable as with plants , as ...
... young organ is born under new conditions that it exhibits new characters . This is not necessarily the case with animals . In an animal organism the separation of the young tissues from the old is not so noticeable as with plants , as ...
Pagina 69
... young organs . The way in which the epipod differentiates varies very much in different cases . The lamina is developed from it , and little buds are gradually formed around the point until the whole is ready to branch out . At this ...
... young organs . The way in which the epipod differentiates varies very much in different cases . The lamina is developed from it , and little buds are gradually formed around the point until the whole is ready to branch out . At this ...
Pagina 79
... young leaf of adult plant . modifications of either stems , leaves , or roots , the latter being the most rare . We will confine our atten- tion at present to those adapted from leaves . In Cobaea scandens the first two leaves of the ...
... young leaf of adult plant . modifications of either stems , leaves , or roots , the latter being the most rare . We will confine our atten- tion at present to those adapted from leaves . In Cobaea scandens the first two leaves of the ...
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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