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 21
... laws of reproduction , of growth , and of inheritance ; for had the action of the conditions been direct , if any of the young had varied , all would probably have varied in the same manner . To judge how much , in the case of any ...
... laws of reproduction , of growth , and of inheritance ; for had the action of the conditions been direct , if any of the young had varied , all would probably have varied in the same manner . To judge how much , in the case of any ...
Page 22
... laws regulating variation , some few of which can be dimly seen , and will be hereafter briefly mentioned . I will here only allude to what may be called correlation of growth . Any change in the embryo or larva will almost certainly ...
... laws regulating variation , some few of which can be dimly seen , and will be hereafter briefly mentioned . I will here only allude to what may be called correlation of growth . Any change in the embryo or larva will almost certainly ...
Page 23
... laws of the correlation of growth . ] The result of the various , quite unknown , or dimly seen laws of variation is infinitely complex and diversified . It is well worth while carefully to study the several treatises published on some ...
... laws of the correlation of growth . ] The result of the various , quite unknown , or dimly seen laws of variation is infinitely complex and diversified . It is well worth while carefully to study the several treatises published on some ...
Page 24
... laws governing inheritance are quite unknown ; no one can say why a peculiarity in different individuals of the same species , or in individuals of different species , is sometimes inherited and sometimes not so ; why the child often ...
... laws governing inheritance are quite unknown ; no one can say why a peculiarity in different individuals of the same species , or in individuals of different species , is sometimes inherited and sometimes not so ; why the child often ...
Page 37
... laws of inheritance than does the breeder , and knowing no more than he does of the intermediate links in the long lines of descent , yet admit that many of our domestic races have descended from the same parents may they not learn a ...
... laws of inheritance than does the breeder , and knowing no more than he does of the intermediate links in the long lines of descent , yet admit that many of our domestic races have descended from the same parents may they not learn a ...
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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