On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJohn Murray, 1869 - 596페이지 |
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81개의 결과 중 1 - 5개
vi 페이지
... organic beings - Advance in organisation - Low forms preserved Objections considered Uniformity of certain cha- racters due to their unimportance , and to their not having been acted on by Natural Selection Indefinite multiplication of ...
... organic beings - Advance in organisation - Low forms preserved Objections considered Uniformity of certain cha- racters due to their unimportance , and to their not having been acted on by Natural Selection Indefinite multiplication of ...
viii 페이지
... ORGANIC BEINGS . On the slow and successive appearance of new species - On their different rates of change - Species once lost do not reappear - Groups of species follow the same general rules in their appear- ance and disappearance as ...
... ORGANIC BEINGS . On the slow and successive appearance of new species - On their different rates of change - Species once lost do not reappear - Groups of species follow the same general rules in their appear- ance and disappearance as ...
xiii 페이지
... organic beings . The whole discussion on embryology corrected , in small details . Mr. G. H. Lewes on the functionless structure of the larva of Salamandra atra . The whole dis- cussion on rudimentary organs Las been slightly modified ...
... organic beings . The whole discussion on embryology corrected , in small details . Mr. G. H. Lewes on the functionless structure of the larva of Salamandra atra . The whole dis- cussion on rudimentary organs Las been slightly modified ...
xv 페이지
... organic , as well as in the inorganic world , being the result of law , and not of Aristotle , in his Physicæ Auscultationes ' ( lib . 2 , cap . 8 , s . 2 ) , after remarking that rain does not fall in order to make the corn grow , any ...
... organic , as well as in the inorganic world , being the result of law , and not of Aristotle , in his Physicæ Auscultationes ' ( lib . 2 , cap . 8 , s . 2 ) , after remarking that rain does not fall in order to make the corn grow , any ...
xviii 페이지
... number , and gene- rally marked by intervals of organic character , which we find to be a practical difficulty in ascertaining affinities ; second , of another impulse connected with the vital forces , tending , in xviii HISTORICAL SKETCH .
... number , and gene- rally marked by intervals of organic character , which we find to be a practical difficulty in ascertaining affinities ; second , of another impulse connected with the vital forces , tending , in xviii HISTORICAL SKETCH .
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accumulated adapted affinities allied species America ancient appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt Edition eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occur oceanic islands offspring organisation parent perfect pigeons pistil pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations varieties vary vols whole widely