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 xi
... effecting little without the aid of selection . On the tendency of organisation to advance - On the present coexistence of high and lowly organised beings - Difficulty of conceiving how at the dawn of life the simplest beings were ...
... effecting little without the aid of selection . On the tendency of organisation to advance - On the present coexistence of high and lowly organised beings - Difficulty of conceiving how at the dawn of life the simplest beings were ...
Page 32
... effected is proved by the enormous prices given for animals with a good pedigree ; and these have now been exported to almost every quarter of the world . The improvement is by no means generally due to crossing different breeds ; all ...
... effected is proved by the enormous prices given for animals with a good pedigree ; and these have now been exported to almost every quarter of the world . The improvement is by no means generally due to crossing different breeds ; all ...
Page 36
... effected by crosses with the fox - hound ; but what con- cerns us is , that the change has been effected unconsci- ously and gradually , and yet so effectually , that , though the old Spanish pointer certainly came from Spain , Mr ...
... effected by crosses with the fox - hound ; but what con- cerns us is , that the change has been effected unconsci- ously and gradually , and yet so effectually , that , though the old Spanish pointer certainly came from Spain , Mr ...
Page 42
... effected . I have seen it gravely remarked , that it was most fortunate that the straw- berry began to vary just when gardeners began to attend closely to this plant . No doubt the strawberry had always varied since it was cultivated ...
... effected . I have seen it gravely remarked , that it was most fortunate that the straw- berry began to vary just when gardeners began to attend closely to this plant . No doubt the strawberry had always varied since it was cultivated ...
Page 46
... effected in the specific character ; but then we do not at present know by what steps , or for what good , a plant produces two kinds of flowers . With culti- vated plants , in the few cases known of a variety habitu- ally bearing ...
... effected in the specific character ; but then we do not at present know by what steps , or for what good , a plant produces two kinds of flowers . With culti- vated plants , in the few cases known of a variety habitu- ally bearing ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo 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 hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living male mammals manner Marsupials migration modification modified descendants mongrels natural selection naturalists nearly nest occasionally offspring organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor racter ranked reciprocal crosses remarked resemble rudimentary organs seeds Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely