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1859
1860
1861
1866
1869
1872

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1859
1860
1861
1869
1872

improved; 1859 1860 1861 1866
still better adapted or improved; 1869 1872

everywhere 1859 1860 1861 1866
in every country 1869 1872

Nature (if I 1861 1866
nature cares nothing for appearances, except in so far as they 1859
Nature cares nothing for appearances, except in so far as they 1860
Nature, if I 1869 1872

allowed thus to personify the natural preservation of varying and favoured individuals during the struggle for existence) cares nothing for appearances, except in so far as they are 1861 1866
allowed to personify the natural preservation or survival of the fittest, cares nothing for appearances, except in so far as they are 1869 1872
OMIT 1859 1860

and the being is placed under well-suited conditions of life. 1859 1860 1861 1866
as is implied by the fact of their selection. 1869 1872

with nicely balanced forces, extremely slight modifications in the structure or habits of one
species
inhabitant
would often give it an advantage over others; and still further modifications of the same kind would often still further increase the
advantage.
advantage,
as long as the
species
being
continued under the same conditions of life and profited by similar means of subsistence and defence. No country can be named in which all the native inhabitants are now so perfectly adapted to each other and to the physical conditions under which they live, that none of them could
anyhow
anyhow
be improved; for in all countries, the natives have been so far conquered by naturalised productions, that they have allowed
some foreigners
foreigners
to take firm possession of the land. And as foreigners have thus everywhere beaten some of the natives, we may safely conclude that the natives might have been modified with advantage, so as to have better resisted
the
such
intruders.
As man can
produce,
produce
and certainly has
produced,
produced
a great result by his methodical and unconscious means of selection, what may not
nature
Nature
natural
effect?
selection effect?
Man can act only on external and visible characters: Nature (if I may be allowed thus to personify the natural preservation of varying and favoured individuals during the struggle for existence) cares nothing for appearances, except in so far as they are useful to any being. She can act on every internal organ, on every shade of constitutional difference, on the whole machinery of life. Man selects only for his own good; Nature only for that of the being which she tends. Every selected character is fully exercised by
her,
her;
and the being is placed under well-suited conditions of life. Man keeps the natives of many climates in the same country; he seldom exercises each selected character in some peculiar and fitting manner; he feeds a long