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 16
... allied species has a narrow range and is rare ? Yet these relations are of the highest importance , for they determine the present welfare , and , as I believe , the future success and modification of every inhabitant of this world ...
... allied species has a narrow range and is rare ? Yet these relations are of the highest importance , for they determine the present welfare , and , as I believe , the future success and modification of every inhabitant of this world ...
Page 26
... allied species , we generally perceive in each domestic race , as already remarked , less uniformity of character than in true species . Domestic races of the same species , also , often have a somewhat monstrous character ; by which I ...
... allied species , we generally perceive in each domestic race , as already remarked , less uniformity of character than in true species . Domestic races of the same species , also , often have a somewhat monstrous character ; by which I ...
Page 27
... allied natural species — for instance , of the many foxes - inhabiting different quarters of the world . I do not believe , as we shall presently see , that the whole amount of difference between the several breeds of the dog has been ...
... allied natural species — for instance , of the many foxes - inhabiting different quarters of the world . I do not believe , as we shall presently see , that the whole amount of difference between the several breeds of the dog has been ...
Page 30
... allied to the carrier , but , instead of a very long beak , has a very short and very broad one . The pouter has a much elongated body , wings , and legs ; and its enormously developed crop , which it glories in inflating , may well ...
... allied to the carrier , but , instead of a very long beak , has a very short and very broad one . The pouter has a much elongated body , wings , and legs ; and its enormously developed crop , which it glories in inflating , may well ...
Page 39
... allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in separating some very distinct variety , and breeding from it , the ...
... allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in separating some very distinct variety , and breeding from it , the ...
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Common terms and phrases
accumulated adapted affinities allied species America analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely