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 43
... seed of a wild plant . No one would expect to raise a first - rate melting pear from the seed of the wild pear , though he ... seeds , and , when a slightly better variety has chanced to appear , selecting it , and so onwards . But the ...
... seed of a wild plant . No one would expect to raise a first - rate melting pear from the seed of the wild pear , though he ... seeds , and , when a slightly better variety has chanced to appear , selecting it , and so onwards . But the ...
Page 48
... seed . In plants which are temporarily propagated by cuttings , buds , & c . , the importance of the crossing both of distinct species and of varieties is immense ; for the cultivator here quite disregards the extreme variability both ...
... seed . In plants which are temporarily propagated by cuttings , buds , & c . , the importance of the crossing both of distinct species and of varieties is immense ; for the cultivator here quite disregards the extreme variability both ...
Page 63
... seed which is wafted by the gentlest breeze ; in short , we see beautiful adaptations everywhere and in every part of the organic world . Again , it may be asked , how is it that varieties , which I have called incipient species ...
... seed which is wafted by the gentlest breeze ; in short , we see beautiful adaptations everywhere and in every part of the organic world . Again , it may be asked , how is it that varieties , which I have called incipient species ...
Page 64
... with gladness , we often see super- abundance of food ; we do not see , or we forget that the birds which are idly singing round us mostly live on insects or seeds , and are thus constantly destroying life 64 STRUGGLE FOR EXISTENCE.
... with gladness , we often see super- abundance of food ; we do not see , or we forget that the birds which are idly singing round us mostly live on insects or seeds , and are thus constantly destroying life 64 STRUGGLE FOR EXISTENCE.
Page 65
... seeds , and are thus constantly destroying life ; or we forget how largely these songsters , or their eggs , or their nestlings , are destroyed by birds and beasts of prey ; we do not always bear in mind , that though food may be now ...
... seeds , and are thus constantly destroying life ; or we forget how largely these songsters , or their eggs , or their nestlings , are destroyed by birds and beasts of prey ; we do not always bear in mind , that though food may be now ...
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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