On the Origin of Species by Means of Natural Selection |
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Page v
... hand , that species undergo modification , and that the existing forms of life have descended by true gen- eration from pre - existing forms . Passing over authors of the classical period , and likewise Demaillet and Buffon , with whose ...
... hand , that species undergo modification , and that the existing forms of life have descended by true gen- eration from pre - existing forms . Passing over authors of the classical period , and likewise Demaillet and Buffon , with whose ...
Page x
... hand , we view ' Persistent Types ' in rela tion 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 un- proven , and ...
... hand , we view ' Persistent Types ' in rela tion 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 un- proven , and ...
Page 15
... hand , we see domesticated animals and plants , though often weak and sickly , yet breeding quite freely under confinement ; and when , on the other hand CHAP . I.J 15 UNDER DOMESTICATION .
... hand , we see domesticated animals and plants , though often weak and sickly , yet breeding quite freely under confinement ; and when , on the other hand CHAP . I.J 15 UNDER DOMESTICATION .
Page 16
Charles Darwin. under confinement ; and when , on the other hand , we see individuals , though taken young from a state of nature , perfectly tamed , long - lived , and healthy ( of which I could give numerous instances ) , yet having ...
Charles Darwin. under confinement ; and when , on the other hand , we see individuals , though taken young from a state of nature , perfectly tamed , long - lived , and healthy ( of which I could give numerous instances ) , yet having ...
Page 43
... hand , nurserymen , from raising large stocks of the same plants , are generally far more successful than amateurs in getting new and valuable varieties . The keep- ing of a large number of individuals of a species in any country ...
... hand , nurserymen , from raising large stocks of the same plants , are generally far more successful than amateurs in getting new and valuable varieties . The keep- ing of a large number of individuals of a species in any country ...
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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