The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Volume 1 |
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Page 44
... individuals of other and distinct breeds , in which as many as seventeen tail - feathers have been counted . Perhaps the first pouter - pigeon did not inflate its crop much more than the turbit now does the upper part of its œsophagus ...
... individuals of other and distinct breeds , in which as many as seventeen tail - feathers have been counted . Perhaps the first pouter - pigeon did not inflate its crop much more than the turbit now does the upper part of its œsophagus ...
Page 45
Or, The Preservation of Favoured Races in the Struggle for Life Charles Darwin. individuals of the same species , be ... individual with some slight deviation of structure , or takes more care than usual in matching his best animals , and ...
Or, The Preservation of Favoured Races in the Struggle for Life Charles Darwin. individuals of the same species , be ... individual with some slight deviation of structure , or takes more care than usual in matching his best animals , and ...
Page 46
... individuals being kept . Hence , number is On this principle of the highest importance for success . Marshall ... individuals of an animal or plant can be reared only where the conditions for its propagation are favourable . When the ...
... individuals being kept . Hence , number is On this principle of the highest importance for success . Marshall ... individuals of an animal or plant can be reared only where the conditions for its propagation are favourable . When the ...
Page 53
... individual differences . No one supposes that all the individuals of the same species are cast in the same actual mould . These individual differences are of the highest importance for us , for they are often inherited , as must be ...
... individual differences . No one supposes that all the individuals of the same species are cast in the same actual mould . These individual differences are of the highest importance for us , for they are often inherited , as must be ...
Page 54
... individual differences , which is extremely perplexing : I refer to those genera which have been called " protean " or ' polymorphic , " in which the species present an inordinate amount of variation . With respect to many of these ...
... individual differences , which is extremely perplexing : I refer to those genera which have been called " protean " or ' polymorphic , " in which the species present an inordinate amount of variation . With respect to many of these ...
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Common terms and phrases
adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree developed difficulty distinct species disuse divergence domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important improved increase in number individual differences inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Melipona Mivart natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young