On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, Volumen2D. Appleton, 1888 - 458 páginas |
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Página viii
... present chapter 290-315 - CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . - Present distribution cannot be accounted for by differences in physica . conditions - Importance of barriers - Affinity of the productions of the same continent ...
... present chapter 290-315 - CHAPTER XII . GEOGRAPHICAL DISTRIBUTION . - Present distribution cannot be accounted for by differences in physica . conditions - Importance of barriers - Affinity of the productions of the same continent ...
Página xi
... present editions on various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the pre- sent volume are tabulated on the following page , for the ...
... present editions on various subjects , according as the evidence has become somewhat stronger or weaker . The more important corrections and some additions in the pre- sent volume are tabulated on the following page , for the ...
Página xvi
... present volume . Unfortunately the view was given by Mr. Matthew very briefly in scattered passages in an Appendix to a work on a different subject , so that it remained unoticed until Mr. Matthew himself drew attention to it in the ...
... present volume . Unfortunately the view was given by Mr. Matthew very briefly in scattered passages in an Appendix to a work on a different subject , so that it remained unoticed until Mr. Matthew himself drew attention to it in the ...
Página xix
... 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 incessante 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 incessante sur les êtres vivants détermine ...
Página 1
... 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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Términos y frases comunes
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed tend theory tion variability variations varieties vary whilst whole wings young