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 334
... island situated above 300 miles from a continent or great continental island ; and many islands situated at a much less distance are equally barren . The Falkland Islands , which are in- habited by a wolf - like fox , come nearest to an ...
... island situated above 300 miles from a continent or great continental island ; and many islands situated at a much less distance are equally barren . The Falkland Islands , which are in- habited by a wolf - like fox , come nearest to an ...
Page 335
... islands , with the absence of all terrestrial mammals . Besides the absence of terrestrial mammals in relation to the remoteness of islands from continents , there is also a relation , to a certain extent independent of distance ...
... islands , with the absence of all terrestrial mammals . Besides the absence of terrestrial mammals in relation to the remoteness of islands from continents , there is also a relation , to a certain extent independent of distance ...
Page 340
... islands , or when it subsequently spread from one island to another , it would undoubtedly be exposed to different conditions of life in the different islands , for it would have to compete with different sets of organisms : a plant ...
... islands , or when it subsequently spread from one island to another , it would undoubtedly be exposed to different conditions of life in the different islands , for it would have to compete with different sets of organisms : a plant ...
Contents
INTRODUCTION | 1 |
STRUGGLE FOR EXISTENCE | 52 |
NATURAL SELECTION | 69 |
Copyright | |
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient 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 doubt embryo Europe existing exterminated extinct extremely facts favourable fertility flowers formation 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 occasional oceanic islands offspring Origin of Species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory tion trees variability variation vary whole widely