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 xv
... hand , have believed that species undergo modification , and that the existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the subject in the classical writers , * the first ...
... hand , have believed that species undergo modification , and that the existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the subject in the classical writers , * the first ...
Page xxiii
... hand , we view ' Persistent Types ' in relation to that hypothesis which supposes the species living at any time to be the result of the gradual modification of pre - existing species - a_hypothesis which , though unproven , and sadly ...
... hand , we view ' Persistent Types ' in relation to that hypothesis which supposes the species living at any time to be the result of the gradual modification of pre - existing species - a_hypothesis which , though unproven , and sadly ...
Page 8
... hand , dissimilar variations under conditions which appear to be nearly uniform . The effects on the offspring are either definite or in- definite . They may be considered as definite when all or nearly all the offspring of individuals ...
... hand , dissimilar variations under conditions which appear to be nearly uniform . The effects on the offspring are either definite or in- definite . They may be considered as definite when all or nearly all the offspring of individuals ...
Page 10
... hand , we see domesticated animals and plants , though often weak and sickly , yet breeding freely under confinement ; and when , on the other hand , we see indi- viduals , though taken young from a state of nature , perfectly tamed ...
... hand , we see domesticated animals and plants , though often weak and sickly , yet breeding freely under confinement ; and when , on the other hand , we see indi- viduals , though taken young from a state of nature , perfectly tamed ...
Page 43
... gene- rally belong to poor people , and are mostly in small lots , they never can be improved . " On the other hand , nurserymen , from raising large stocks of the same plants CHAP . I. CIRCUMSTANCES FAVOURABLE TO SELECTION . 43.
... gene- rally belong to poor people , and are mostly in small lots , they never can be improved . " On the other hand , nurserymen , from raising large stocks of the same plants CHAP . I. CIRCUMSTANCES FAVOURABLE TO SELECTION . 43.
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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