On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 69
... occurred , that other variations useful in some way to each being in the great and complex battle of life should sometimes occur in the course of thousands of generations ? If such do occur , can we doubt ( remembering that many more ...
... occurred , that other variations useful in some way to each being in the great and complex battle of life should sometimes occur in the course of thousands of generations ? If such do occur , can we doubt ( remembering that many more ...
Page 140
... occur , and seem to me very remarkable . I will , however , give one curious and complex case , not indeed as affecting any important character , but from occurring in several species of the same genus , partly under = domestication and ...
... occur , and seem to me very remarkable . I will , however , give one curious and complex case , not indeed as affecting any important character , but from occurring in several species of the same genus , partly under = domestication and ...
Page 334
... occur on oceanic islands , aerial mammals do occur on almost every island . New Zealand possesses two bats found nowhere else in the world : Norfolk Island , the Viti Archipelago , the Bonin Islands , the Caroline and Marianne ...
... occur on oceanic islands , aerial mammals do occur on almost every island . New Zealand possesses two bats found nowhere else in the world : Norfolk Island , the Viti Archipelago , the Bonin Islands , the Caroline and Marianne ...
Contents
VARIATION UNDER DOMESTICATION | 6 |
VARIATION UNDER NATURE | 38 |
STRUGGLE FOR EXISTENCE | 52 |
Copyright | |
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distant distinct species divergence domestic doubt eggs embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flower formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important increase in number individuals inhabitants inherited insects instance instincts intercrossing land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring perfect pigeons pistil plants pollen present probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder theory tion trees variability variations vary whole widely