On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page xxiii
... amount of modification which living beings have undergone during geological time is but very small in relation to the whole series of changes which they have suffered . " In December , 1859 , Dr. Hooker published his ' Introduction to ...
... amount of modification which living beings have undergone during geological time is but very small in relation to the whole series of changes which they have suffered . " In December , 1859 , Dr. Hooker published his ' Introduction to ...
Page 4
... amount of hereditary modification is at least possible ; and , what is equally or more important , we shall see how great is the power of man in accumulating by his Selection successive slight variations . I will then pass on to the ...
... amount of hereditary modification is at least possible ; and , what is equally or more important , we shall see how great is the power of man in accumulating by his Selection successive slight variations . I will then pass on to the ...
Page 7
... cause any ap- preciable amount of variation ; and that , when the organisation has once begun to vary , it generally con- tinues varying for many generations . No case is on CHAP . I. བ VARIATION UNDER DOMESTICATION . 7 II.
... cause any ap- preciable amount of variation ; and that , when the organisation has once begun to vary , it generally con- tinues varying for many generations . No case is on CHAP . I. བ VARIATION UNDER DOMESTICATION . 7 II.
Page 8
... amount of food , colour from the nature of the food , thickness of the skin and hair from climate , & c . Each of the endless variations which we see in the plumage of our fowls must have had some efficient cause ; and if the same cause ...
... amount of food , colour from the nature of the food , thickness of the skin and hair from climate , & c . Each of the endless variations which we see in the plumage of our fowls must have had some efficient cause ; and if the same cause ...
Page 18
... amount of difference in our domesticated races . In attempting to estimate the amount of struc- tural difference between the domestic races of the same species , we are soon involved in doubt , from not knowing whether they have ...
... amount of difference in our domesticated races . In attempting to estimate the amount of struc- tural difference between the domestic races of the same species , we are soon involved in doubt , from not knowing whether they have ...
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Common terms and phrases
accumulated adapted affinities allied species America ancient appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt Edition eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occur oceanic islands offspring organisation parent perfect pigeons pistil pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations varieties vary vols whole widely