On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeThis is the 'second edition' of Darwin's Origin of Species. |
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Page 4
generations, some bird had given birth to a woodpecker, and some plant to the
missletoe, and that these had been produced perfect as we now see them; but
this assumption seems to me to be no explanation, for it leaves the case of the ...
generations, some bird had given birth to a woodpecker, and some plant to the
missletoe, and that these had been produced perfect as we now see them; but
this assumption seems to me to be no explanation, for it leaves the case of the ...
Page 7
It seems pretty clear that organic beings must be exposed during several
generations to the new conditions of life to cause any appreciable amount of
variation; and that when the organisation has once begun to vary, it generally
continues to ...
It seems pretty clear that organic beings must be exposed during several
generations to the new conditions of life to cause any appreciable amount of
variation; and that when the organisation has once begun to vary, it generally
continues to ...
Page 12
The whole organisation seems to have become plastic, and tends to depart in
some small degree from that of the parental type. Any variation which is not
inherited is unimportant for us. But the number and diversity of inheritable
deviations of ...
The whole organisation seems to have become plastic, and tends to depart in
some small degree from that of the parental type. Any variation which is not
inherited is unimportant for us. But the number and diversity of inheritable
deviations of ...
Page 18
Even if this latter fact were found more strictly and generally true than seems to
me to be the case, what does it show, but that some of our breeds originated
there, four or five thousand years ago? But Mr. Horner's researches have
rendered it ...
Even if this latter fact were found more strictly and generally true than seems to
me to be the case, what does it show, but that some of our breeds originated
there, four or five thousand years ago? But Mr. Horner's researches have
rendered it ...
Page 20
... pigeons) extremely uniform, and everything seems simple enough; but when
these mongrels are crossed one with another for several generations, hardly two
of them will be alike, and then the extreme difficulty, or rather utter hopelessness,
...
... pigeons) extremely uniform, and everything seems simple enough; but when
these mongrels are crossed one with another for several generations, hardly two
of them will be alike, and then the extreme difficulty, or rather utter hopelessness,
...
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action adapted allied America amount ancient animals appear become believe birds breeds cause chapter characters climate closely common compared considered continuous crossed descended developed difficulty distinct domestic doubt Edition effects existing extinct extremely facts families favourable fertility flowers follow formations forms genera genus geological give given groups habits hand Hence History hybrids important increase individuals inhabitants inherited insects instance instincts intermediate islands kind land laws less living look male manner means modification namely natural selection naturalists nearly never observed occur organic origin parent perfect period plants points Post 8vo present principle probably produced range ranked reason remarked Second seeds seems seen separated single slight sometimes species sterility structure struggle successive supposed tend theory tion variability variations varieties vary Vols whole widely Woodcuts