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 10
... all would probably have varied in the same manner. To judge how much, in the
case of any variation, we should attribute to the direct action of heat, moisture,
light, food, &c., is most difficult: my impression is, that with animals such agencies
...
... all would probably have varied in the same manner. To judge how much, in the
case of any variation, we should attribute to the direct action of heat, moisture,
light, food, &c., is most difficult: my impression is, that with animals such agencies
...
Page 15
I may add, that when under nature the conditions of life do change, variations and
reversions of character probably do occur; but natural selection, as will hereafter
be explained, will determine how far the new characters thus arising shall be ...
I may add, that when under nature the conditions of life do change, variations and
reversions of character probably do occur; but natural selection, as will hereafter
be explained, will determine how far the new characters thus arising shall be ...
Page 19
Even in the case of the domestic dogs of the whole world, which I fully admit have
probably descended from several wild species, I cannot doubt that there has
been an immense amount of inherited variation. Who can believe that animals ...
Even in the case of the domestic dogs of the whole world, which I fully admit have
probably descended from several wild species, I cannot doubt that there has
been an immense amount of inherited variation. Who can believe that animals ...
Page 30
Some variations useful to him have probably arisen suddenly, or by one step;
many botanists, for instance, believe that the fuller's teazle, with its hooks, which
cannot be rivalled by any mechanical contrivance, is only a variety of the wild ...
Some variations useful to him have probably arisen suddenly, or by one step;
many botanists, for instance, believe that the fuller's teazle, with its hooks, which
cannot be rivalled by any mechanical contrivance, is only a variety of the wild ...
Page 31
Youatt, who was probably better acquainted with the works of agriculturists than
almost any other individual, and who was himself a very good judge of an animal,
speaks of the principle of selection as “that which enables the agriculturist, not ...
Youatt, who was probably better acquainted with the works of agriculturists than
almost any other individual, and who was himself a very good judge of an animal,
speaks of the principle of selection as “that which enables the agriculturist, not ...
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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