Natural selection
tends only to make each organic being as perfect as, or slightly more perfect than, the other inhabitants of the same country with which it has to struggle for existence. tends only to make each organic being as perfect as, or slightly more perfect than, the other inhabitants of the same country with which it has to struggle for existence. 1859 1860 1861 1869 |
will not produce absolute perfection, nor do we always meet, as far as we can judge, with this high standard under nature. 1866 |
tends only to make each organic being as perfect as, or slightly more perfect than, the other inhabitants of the same country with which it comes into competition. 1872 |
And we see that this is the
degree degree 1859 1860 1861 1869 | standard 1872 |
of perfection attained under nature. The endemic productions of New Zealand, for instance, are perfect one compared with another; but they are now rapidly yielding before the advancing legions of plants and animals introduced from Europe. Natural selection will not produce absolute perfection, nor do we always meet, as far as we can judge, with this high standard under nature. The correction for the aberration of light is
said, said, 1859 1860 1861 | said 1866 1869 1872 |
on high authority, on high authority, 1859 1860 1861 |
by Müller 1866 1869 1872 |
not to be perfect even in that most perfect organ, the
eye. eye. 1859 1860 1861 | human eye. 1866 1869 1872 |
↑2 blocks not present in 1859 1860 1861 1866 1869; present in 1872 | Helmholtz, whose judgment no one will dispute, after describing in the strongest terms the wonderful powers of the human eye, adds these remarkable words:
"That which we have discovered in the way of inexactness and imperfection in the optical machine and in the image on the retina, is as nothing in comparison with the incongruities which we have just come across in the domain of the sensations. One might say that nature has taken delight in accumulating contradictions in order to remove all foundation from the theory of a pre-existing harmony between the external and internal worlds."
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If our reason
leads leads 1859 1860 1861 1866 1869 | lead 1872 |
us to admire with enthusiasm a multitude of inimitable contrivances in nature, this same reason tells us, though we may easily err on both sides, that some other contrivances
are less perfect. Can we consider the sting of the
wasp or of the wasp or of the 1859 1860 1861 |
OMIT 1866 1869 1872 |
bee as perfect, which, when used against many
attacking animals, attacking animals, 1859 1860 1861 1866 1869 |
kinds of enemies, 1872 |
cannot be withdrawn, owing to the backward serratures, and
so so 1859 1860 1861 1866 1869 | thus 1872 |
inevitably causes the death of the insect by tearing out its viscera? |
If we look at the sting of the bee, as having
originally originally 1859 1860 1861 1866 1869 | originally 1872 |
existed in a remote progenitor as a boring and serrated instrument, like that in so many members of the same great order, and
which has which has 1859 1860 1861 1866 1869 |
that it has since 1872 |
been modified but not perfected for its present purpose, with the poison originally adapted
to cause galls subsequently to cause galls subsequently 1859 1860 |
for some purpose, such as to produce galls, subsequently 1861 1866 |
for some other purpose, such as to produce galls, subsequently 1869 |
for some other object, such as to produce galls, since 1872 |
intensified, we can perhaps understand
how it is that the use of the sting should so often cause the insect's
own death: for if on the whole the power of stinging be useful to the
community, community, 1859 1860 1861 | social community, 1866 1869 1872 |
it will
fulfil fulfil 1859 1860 1861 1866 1869 | fulfill 1872 |
all the requirements of natural
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