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! |
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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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