On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for Life |
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Page 137
... families . Thus it is , as I believe , that two or more genera are produced by descent with modification , from two or more species of the same genus . And the two or more parent - species are supposed to have descended from some one ...
... families . Thus it is , as I believe , that two or more genera are produced by descent with modification , from two or more species of the same genus . And the two or more parent - species are supposed to have descended from some one ...
Page 138
... families , or genera , with those now living , yet are often , in some degree , intermediate in character between existing groups ; and we can understand this fact , for the extinct species lived at very ancient epochs when the ...
... families , or genera , with those now living , yet are often , in some degree , intermediate in character between existing groups ; and we can understand this fact , for the extinct species lived at very ancient epochs when the ...
Page 139
... families , or even orders , according to the amount of divergent modification supposed to be represented in the diagram . And the two new families , or orders , will have descended from two species of the original genus ; and these two ...
... families , or even orders , according to the amount of divergent modification supposed to be represented in the diagram . And the two new families , or orders , will have descended from two species of the original genus ; and these two ...
Page 140
... families , orders , and classes , as at the present day . On the Degree to which Organisation tends to advance . Natural selection acts , as we have seen , exclusively by the preservation and accumulation of variations , which have been ...
... families , orders , and classes , as at the present day . On the Degree to which Organisation tends to advance . Natural selection acts , as we have seen , exclusively by the preservation and accumulation of variations , which have been ...
Page 155
... families , families , orders , sub - classes , and classes . The several subordinate groups in any class cannot be ranked in a single file , but seem rather to be clustered round points , and these round other points , and so on in ...
... families , families , orders , sub - classes , and classes . The several subordinate groups in any class cannot be ranked in a single file , but seem rather to be clustered round points , and these round other points , and so on in ...
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Common terms and phrases
adapted affinities allied species America analogous ancient appear archipelago become bees believe birds breeds cause cells characters climate closely allied colour common continued crossed crustaceans degree difficulty distinct species doubt Edition eggs embryo Europe existing exterminated extinct extremely facts favourable Fcap females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites History hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring organic organisation parent perfect pigeons pistil plants pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble rudimentary seeds Silurian slight South America stamens sterility structure struggle successive supposed theory tion variability variations varieties vary Vols whole widely Woodcuts