On the Origin of Species by Means of Natural Selection |
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Page 6
... common parent - Explains the Grouping of all organic beings , CHAPTER V. LAWS OF VARIATION . 77 Effects of external conditions - Use and disuse , combined with natural selection organs of flight and of vision - Acclimatisation ...
... common parent - Explains the Grouping of all organic beings , CHAPTER V. LAWS OF VARIATION . 77 Effects of external conditions - Use and disuse , combined with natural selection organs of flight and of vision - Acclimatisation ...
Page 24
... common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , I do not doubt that they all have descended from the common wild duck and rabbit . The ...
... common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , I do not doubt that they all have descended from the common wild duck and rabbit . The ...
Page 27
... common opinion of naturalists is correct , namely , that all have descended from the rock - pigeon ( Columba livia ) , including under this term several geographical races or sub - species , which differ from each other in the most ...
... common opinion of naturalists is correct , namely , that all have descended from the rock - pigeon ( Columba livia ) , including under this term several geographical races or sub - species , which differ from each other in the most ...
Page 42
... common goose has not given rise to any marked varieties ; hence the Thoulouse and the common breed , which differ only in colour , that most fleeting of characters , have lately been exhibited as dis- tinct at our poultry - shows . I ...
... common goose has not given rise to any marked varieties ; hence the Thoulouse and the common breed , which differ only in colour , that most fleeting of characters , have lately been exhibited as dis- tinct at our poultry - shows . I ...
Page 46
... common species vary most - Species of the larger genera in any country vary more than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to ...
... common species vary most - Species of the larger genera in any country vary more than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to ...
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Common terms and phrases
accumulated adapted affinities allied species America amount ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living look male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring organic organisation perfect pigeons pistil plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rudimentary seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder tend theory tion trees variability variation varieties vary whole widely