On the Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life1859 |
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Page v
... Principle of Selection anciently followed , its Effects - Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection .. 7-43 -- CHAPTER II . VARIATION UNDER ...
... Principle of Selection anciently followed , its Effects - Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection .. 7-43 -- CHAPTER II . VARIATION UNDER ...
Page 5
... principle of inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural ...
... principle of inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural ...
Page 7
... Principle of Selection anciently followed , its Effects - Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection . WHEN we look to the individuals of the ...
... Principle of Selection anciently followed , its Effects - Methodical and Unconscious Selection - Unknown Origin of our Domestic Productions - Circumstances favourable to Man's power of Selection . WHEN we look to the individuals of the ...
Page 12
... is the tendency to inheritance : like produces like is his fundamental belief : doubts have been thrown on this principle by theoretical writers alone . When a • deviation appears not unfrequently , and we see it 12 СНАР . І. VARIATION.
... is the tendency to inheritance : like produces like is his fundamental belief : doubts have been thrown on this principle by theoretical writers alone . When a • deviation appears not unfrequently , and we see it 12 СНАР . І. VARIATION.
Page 25
... principle of reversion to ancestral characters , if all the domestic breeds have descended from the rock - pigeon . But if we deny this , we must make one of the two following highly improbable suppositions . Either , firstly , that all ...
... principle of reversion to ancestral characters , if all the domestic breeds have descended from the rock - pigeon . But if we deny this , we must make one of the two following highly improbable suppositions . Either , firstly , that all ...
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Common terms and phrases
adapted affinities allied species America amount analogous ancient animals become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites History hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring perfect pigeons plants pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble Second Edition seeds sexual selection Silurian slight South America sterility structure struggle successive suppose theory Third Edition tion variability variation varieties vary Vols whole widely Woodcuts