The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJ. Murray, 1920 - 432ÆäÀÌÁö |
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viii ÆäÀÌÁö
... present chapter CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . 272 Present distribution cannot be accounted for by differences in physical con- ditions - Importance of barriers - Affinity of the productions of the same continent - Centres of ...
... present chapter CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . 272 Present distribution cannot be accounted for by differences in physical con- ditions - Importance of barriers - Affinity of the productions of the same continent - Centres of ...
xi ÆäÀÌÁö
... present editions on various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the present volume are tabu- lated below , for the convenience of those ...
... present editions on various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the present volume are tabu- lated below , for the convenience of those ...
xiv ÆäÀÌÁö
... present day of simple productions , he maintains that such forms are now spontaneously generated . * Geoffroy Saint - Hilaire , as is stated in his ' Life , ' written by his son , suspected , as early as 1795 , that what we call species ...
... present day of simple productions , he maintains that such forms are now spontaneously generated . * Geoffroy Saint - Hilaire , as is stated in his ' Life , ' written by his son , suspected , as early as 1795 , that what we call species ...
xix ÆäÀÌÁö
... present . He lays weight on what he calls the principle of finality , " puissance mystérieuse , indéterminée ; fatalité pour les uns ; pour les autres , volonté providentielle , dont l'action inces- sante sur les êtres vivants détermine ...
... present . He lays weight on what he calls the principle of finality , " puissance mystérieuse , indéterminée ; fatalité pour les uns ; pour les autres , volonté providentielle , dont l'action inces- sante sur les êtres vivants détermine ...
1 ÆäÀÌÁö
... present to the past inhabitants of that continent . These facts , as will be seen in the latter chapters of this volume , seemed to throw some light on the origin of species - that mystery of mysteries , as it has been called by one of ...
... present to the past inhabitants of that continent . These facts , as will be seen in the latter chapters of this volume , seemed to throw some light on the origin of species - that mystery of mysteries , as it has been called by one of ...
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accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely fact favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamell©¡ larv©¡ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed tend theory tion variability variations varieties vary whilst whole wings young