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 v
... Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection 7 CHAPTER II . VARIATION UNDER NATURE ...
... Principles of Selection , anciently followed , their Effects- Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection 7 CHAPTER II . VARIATION UNDER NATURE ...
Page xiv
... principle of natural selection shadowed forth , but how little Aristotle fully comprehended the principle , is shown by his remarks on the formation of the teeth . branches of trees . But he likewise believed in a xiv HISTORICAL SKETCH ...
... principle of natural selection shadowed forth , but how little Aristotle fully comprehended the principle , is shown by his remarks on the formation of the teeth . branches of trees . But he likewise believed in a xiv HISTORICAL SKETCH ...
Page xvi
... principle of natural selection , and this is the first recognition which has been indi- cated ; but he applies it only to the races of man , and to certain characters alone . After remarking that ne- groes and mulattoes enjoy an ...
... principle of natural selection , and this is the first recognition which has been indi- cated ; but he applies it only to the races of man , and to certain characters alone . After remarking that ne- groes and mulattoes enjoy an ...
Page xviii
... principle of natural selection . The celebrated geologist and naturalist , Von Buch , in his excellent Description Physique des Isles Canaries ' ( 1836 , p . 147 ) , clearly expresses his belief that varieties slowly become changed into ...
... principle of natural selection . The celebrated geologist and naturalist , Von Buch , in his excellent Description Physique des Isles Canaries ' ( 1836 , p . 147 ) , clearly expresses his belief that varieties slowly become changed into ...
Page xxi
... others find Professor Owen's controversial writings as difficult to understand and to reconcile with each other , as I do . As far as the mere enunciation of the principle of natural selection is con- cerned HISTORICAL SKETCH . xxi.
... others find Professor Owen's controversial writings as difficult to understand and to reconcile with each other , as I do . As far as the mere enunciation of the principle of natural selection is con- cerned HISTORICAL SKETCH . xxi.
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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