Comparison with 1859 |
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clusion
when we look, for instance, at the logger-headed duck, which has wings incapable of flight, in nearly the same condition as in the domestic duck; or when we look at the burrowing tucutucu,
which is occasionally blind, and then at certain moles, which are habitually blind and have their eyes covered with skin; or when we look at the blind animals inhabiting the dark caves of America and Europe. In both
varieties and species
correlation
of growth
seems to have played a most
important part, so that when one part has been modified other parts are
necessarily modified. In
both varieties and species
reversions to long-lost characters occur. How inexplicable on the theory of creation is the occasional
appearance of stripes on the shoulder
and legs of the several species of the horse-genus and in
their hybrids! How simply is this fact explained if we believe that these species have
descended
from a striped progenitor, in the same manner as the several domestic breeds of pigeon have
descended from the blue and barred rock-pigeon! |
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On the ordinary view of each species having been independently created, why should the
specific characters,
or those by which the species of the same genus differ from each other, be more variable than the
generic characters in which they all agree? Why, for instance, should the colour of a flower be more likely to vary in any one species of a genus, if the other species,
supposed to have been created independently, have
differently coloured flowers, than if all the species of the genus have
the same coloured flowers? If species are only well-marked varieties, of which the characters have become in a high degree permanent, we can understand this fact; for they have already varied since they branched off from a common progenitor in certain characters, by which they have come to be specifically distinct from each other;
|
clusion clusion 1859 1860 | conclusion 1861 1866 1869 1872 |
when we look, for instance, at the logger-headed duck, which has wings incapable of flight, in nearly the same condition as in the domestic duck; or when we look at the burrowing
tucutucu, tucutucu, 1859 1860 1861 1866 1869 | tucu-tucu, 1872 |
which is occasionally blind, and then at certain moles, which are habitually blind and have their eyes covered with skin; or when we look at the blind animals inhabiting the dark caves of America and Europe.
In both In both 1859 1860 1861 1866 | In 1869 | With 1872 |
varieties and
species species 1859 1860 1861 1866 1869 | species, 1872 |
correlation correlation 1859 1860 1861 1866 | correlated 1869 1872 |
of growth of growth 1859 1860 1861 1866 | variation 1869 1872 |
seems to have played
a most a most 1859 1860 1861 1866 | an 1869 1872 |
important part, so that when one part has been modified other parts
are are 1859 1860 1861 1866 | have been 1869 1872 |
necessarily modified.
In In 1859 1860 1861 1866 1869 | With 1872 |
both varieties and
species species 1859 1860 1861 1866 1869 | species, 1872 |
reversions to long-lost characters
occur. occur. 1859 1860 1861 1866 1869 | occasionally occur. 1872 |
How inexplicable on the theory of creation is the
occasional occasional 1859 1860 1869 1872 | variable 1861 1866 |
appearance of stripes on the
shoulder shoulder 1859 1860 1861 | shoulders 1866 1869 1872 |
and legs of the several species of the horse-genus and
in in 1859 1860 1861 | of 1866 1869 1872 |
their
hybrids! hybrids! 1859 1860 1861 1866 1869 |
hybrids! How simply is this fact explained if we believe that these species are all descended from a striped progenitor, in the same manner as the several domestic breeds of the pigeon are descended from the blue and barred rock-pigeon! 1872 |
How simply is this fact explained if we believe that these species
have have 1859 1860 1861 1866 | are all 1869 |
descended descended 1859 1860 1861 1869 | all descended 1866 |
from a striped progenitor, in the same manner as the several domestic breeds of
pigeon have pigeon have 1859 1860 1861 1866 |
the pigeon are 1869 |
descended from the blue and barred rock-pigeon! |
|
On the ordinary view of each species having been independently created, why should
the the 1859 1860 1861 1866 1869 | the 1872 |
specific
characters, characters, 1859 1860 1866 1869 1872 | charac- ters, 1861 |
or those by which the species of the same genus differ from each other, be more variable than
the the 1859 1860 1861 1866 1869 | the 1872 |
generic characters in which they all agree? Why, for instance, should the colour of a flower be more likely to vary in any one species of a genus, if the other
species, species, 1859 1860 1861 1866 1869 | species 1872 |
supposed to have been created independently, have supposed to have been created independently, have 1859 1860 1861 1866 1869 |
possess 1872 |
differently coloured flowers, than if all
the species of the genus have the species of the genus have 1859 1860 1861 1866 1869 |
possessed 1872 |
the same coloured flowers? If species are only well-marked varieties, of which the characters have become in a high degree permanent, we can understand this fact; for they have already varied since they branched off from a common progenitor in certain characters, by which they have come to be specifically distinct from each other;
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