The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page xxvi
... 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 Intro- duction 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 Intro- duction 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 8
... amount of variation ; and that , when the organisation has once begun to vary , it generally continues varying for many generations . No case is on record of a variable organism ceasing to vary under cultivation . Our oldest cultivated ...
... amount of variation ; and that , when the organisation has once begun to vary , it generally continues varying for many generations . No case is on record of a variable organism ceasing to vary under cultivation . Our oldest cultivated ...
Page 9
... 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 19
... amount of difference in our do- mesticated races . In attempting to estimate the amount of structural difference between allied domestic races , we are soon involved in doubt , from not knowing whether they are descended from one or ...
... amount of difference in our do- mesticated races . In attempting to estimate the amount of structural difference between allied domestic races , we are soon involved in doubt , from not knowing whether they are descended from one or ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young