Evolution by Atrophy in Biology and SociologyD. Appleton, 1899 - 316 pagini |
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Pagina 10
... female ) , proceeding usually from two separate individuals . From the moment that this union is effected , the continuity remains unbroken.2 When such an individual reproduces 1 We regard the cell as the unit of life , although ...
... female ) , proceeding usually from two separate individuals . From the moment that this union is effected , the continuity remains unbroken.2 When such an individual reproduces 1 We regard the cell as the unit of life , although ...
Pagina 13
... female cepha- lopod , to effect impregnation . The individuality of this hectocotyle appears so obvious that for a long time it was regarded as a distinct species - some kind of worm . At first sight , then , the hectocotyle seems to be ...
... female cepha- lopod , to effect impregnation . The individuality of this hectocotyle appears so obvious that for a long time it was regarded as a distinct species - some kind of worm . At first sight , then , the hectocotyle seems to be ...
Pagina 31
... female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , exopodite ; en , endoposite protopodite ( pr . ) , the exopodite ( x . ) , and ( Huxley ) . the endopodite ( en . ) . Each of these parts is itself divided ...
... female ( 1,5 / 1 ) of the three fundamental parts : the pr , protopodite ; ex , exopodite ; en , endoposite protopodite ( pr . ) , the exopodite ( x . ) , and ( Huxley ) . the endopodite ( en . ) . Each of these parts is itself divided ...
Pagina 33
... female carries appendages similar to those which have just been described . In the male , the organs of this segment ... female . It serves as a channel to conduct the fluid from the male orifice to that of the female . It consists of a ...
... female carries appendages similar to those which have just been described . In the male , the organs of this segment ... female . It serves as a channel to conduct the fluid from the male orifice to that of the female . It consists of a ...
Pagina 34
... female . Sometimes there are two FIG . 6. Astacus fluvia- of the 4th abdominal ( 3/1 ) : pr , potopodite ; tilis . Left appendage appendages , sometimes one or both segment of the female are missing ; in any case the en , endopodite ...
... female . Sometimes there are two FIG . 6. Astacus fluvia- of the 4th abdominal ( 3/1 ) : pr , potopodite ; tilis . Left appendage appendages , sometimes one or both segment of the female are missing ; in any case the en , endopodite ...
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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