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 67
... give the plant the power of increasing in number , we should have to give it some advantage over its competitors , or over the animals which preyed on it . On the confines of its geo- graphical range a change of constitution with ...
... give the plant the power of increasing in number , we should have to give it some advantage over its competitors , or over the animals which preyed on it . On the confines of its geo- graphical range a change of constitution with ...
Page 111
... give its aid to ordinary selection , by assuring to the most vigorous and best adapted males the greatest number of offspring . Sexual selection will also give characters useful to the males alone , in their struggles with other males ...
... give its aid to ordinary selection , by assuring to the most vigorous and best adapted males the greatest number of offspring . Sexual selection will also give characters useful to the males alone , in their struggles with other males ...
Page 351
... give the characters common , for instance , to all mammals , by another those common to all carnivora , by another ... gives the characters , seem to imply that something more is included in our classifica- tion than mere resemblance . I ...
... give the characters common , for instance , to all mammals , by another those common to all carnivora , by another ... gives the characters , seem to imply that something more is included in our classifica- tion than mere resemblance . I ...
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