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 xiii
... believe that species are immutable productions , and have been separately created . This view has been ably maintained by many authors . Some few naturalists , on the other hand , believe that species undergo modification , and that the ...
... believe that species are immutable productions , and have been separately created . This view has been ably maintained by many authors . Some few naturalists , on the other hand , believe that species undergo modification , and that the ...
Page xiv
... believe that existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que l'avenir doive avoir prise sur lui . " In England the Hon . and Rev. W ...
... believe that existing species are now undergoing modification ; and , as his son adds , " C'est donc un problème à réserver entièrement à l'avenir , supposé même que l'avenir doive avoir prise sur lui . " In England the Hon . and Rev. W ...
Page 8
... believe in this ; but the chief one is the remarkable effect which confine- ment or cultivation has on the function of the repro- ductive system : this system appearing to be far more susceptible than any other part of the organisation ...
... believe in this ; but the chief one is the remarkable effect which confine- ment or cultivation has on the function of the repro- ductive system : this system appearing to be far more susceptible than any other part of the organisation ...
Page 14
... believe that the rule has a wider extension , and that when there is no apparent reason why a peculiarity should appear at any particular age , yet that it does tend to appear in the offspring at the same period at which it first ...
... believe that the rule has a wider extension , and that when there is no apparent reason why a peculiarity should appear at any particular age , yet that it does tend to appear in the offspring at the same period at which it first ...
Page 17
... believe , as we shall presently see , that the whole amount of difference be- tween the several breeds of the dog has been produced under domestication ; I believe that some small part of the difference is due to their having descended ...
... believe , as we shall presently see , that the whole amount of difference be- tween the several breeds of the dog has been produced under domestication ; I believe that some small part of the difference is due to their having descended ...
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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