On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for LifeHumphrey Milford, Oxford University Press, 1923 - 454페이지 |
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4 페이지
... shall then see how Natural Selection almost in- evitably causes much Extinction of the less improved forms of life , and leads to what I have called Divergence of Character . In the next chapter I shall discuss 4 ON THE ORIGIN OF SPECIES.
... shall then see how Natural Selection almost in- evitably causes much Extinction of the less improved forms of life , and leads to what I have called Divergence of Character . In the next chapter I shall discuss 4 ON THE ORIGIN OF SPECIES.
5 페이지
... less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure , I can entertain no doubt , after ...
... less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure , I can entertain no doubt , after ...
8 페이지
... less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter on the copious details which I have collected on this curious subject ; but to show how singular the laws are ...
... less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter on the copious details which I have collected on this curious subject ; but to show how singular the laws are ...
10 페이지
... less and the bones of the leg more , in proportion to the whole skeleton , than do the same bones in the wild - duck ; and I presume that this change may be safely attributed to the domestic duck flying much less , and walking more ...
... less and the bones of the leg more , in proportion to the whole skeleton , than do the same bones in the wild - duck ; and I presume that this change may be safely attributed to the domestic duck flying much less , and walking more ...
15 페이지
... less uni- formity of character than in true species . Domestic races of the same species , also , often have a somewhat monstrous character ; by which I mean , that , although differing from each other , and from other species of the ...
... less uni- formity of character than in true species . Domestic races of the same species , also , often have a somewhat monstrous character ; by which I mean , that , although differing from each other , and from other species of the ...
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