On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, Volume 2 |
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Page v
... individuals and varieties of the same species : often severe between species of the same genus - The relation of organism to organism the most important of all rela- tions 48-61 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF.
... individuals and varieties of the same species : often severe between species of the same genus - The relation of organism to organism the most important of all rela- tions 48-61 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF.
Page vi
... genus vary in an analogous manner— Reversions to long - lost characters - Summary 106-132 CHAPTER VI . DIFFICULTIES OF THE THEORY . - Difficulties of the theory of descent with modification Absence or rarity of transitional varieties ...
... genus vary in an analogous manner— Reversions to long - lost characters - Summary 106-132 CHAPTER VI . DIFFICULTIES OF THE THEORY . - Difficulties of the theory of descent with modification Absence or rarity of transitional varieties ...
Page xv
... genus were created in an originally highly plastic condition , and that these have produced , chiefly by intercrossing , but likewise by variation , all our existing species . In 1826 Professor Grant , in the concluding paragraph in his ...
... genus were created in an originally highly plastic condition , and that these have produced , chiefly by intercrossing , but likewise by variation , all our existing species . In 1826 Professor Grant , in the concluding paragraph in his ...
Page xvi
... genus . " In 1843-44 Professor Ha'deman ( Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the arguments for and against the hypothesis of the development and modification of species : he seems to lean ...
... genus . " In 1843-44 Professor Ha'deman ( Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the arguments for and against the hypothesis of the development and modification of species : he seems to lean ...
Page 12
... genus , in several trifling respects , they often differ in an extreme degree in some one part , both when compared one with another , and more especially when compared with the species under nature to which they are nearest allied ...
... genus , in several trifling respects , they often differ in an extreme degree in some one part , both when compared one with another , and more especially when compared with the species under nature to which they are nearest allied ...
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Common terms and phrases
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