Comparison with 1859 |
|
to rather wider
intervals, intervals, 1859 1860 | intervals 1861 1866 1869 1872 |
namely, namely, 1859 1860 |
of time, namely, 1861 1866 1869 1872 |
to distinct but consecutive stages of the same great formation, we find that the embedded fossils, though almost
universally ranked as specifically different, yet are far more closely
allied allied 1859 1860 | related 1861 1866 1869 1872 |
to each other than are the species found in more widely separated formations;
but to this subject I shall have to return but to this subject I shall have to return 1859 1860 |
so that here again we have undoubted evidence of change, though not strictly of variation, 1861 1866 |
so that here again we have undoubted evidence of change 1869 1872 |
in the
following following 1859 1860 |
direction required by my theory; but to this latter subject I shall have to return in the following 1861 1866 |
direction required by the theory; but to this latter subject I shall have to return in the following 1869 |
direction required by the theory; but to this latter subject I shall return in the following 1872 |
chapter. |
|
One other consideration is worth notice: One other consideration is worth notice: 1859 1860 1861 |
OMIT 1866 1869 1872 |
with with 1859 1860 1861 | With 1866 1869 1872 |
animals and plants that
can can 1859 1860 1861 | can 1866 1869 1872 |
propagate rapidly and
are are 1859 1860 1861 | do 1866 1869 1872 |
not
highly locomotive, highly locomotive, 1859 1860 1861 | wander much, 1866 1869 1872 |
there is reason to suspect, as we have formerly seen, that their varieties are generally at first local; and that such local varieties do not spread widely and supplant their parent-forms until they have been modified and perfected in some considerable degree. According to this view, the chance of discovering in a formation in any one country all the early stages of transition between any two
forms, forms, 1859 1860 1861 1872 | such forms, 1866 1869 |
is small, for the successive changes are supposed to have been local or confined to some one spot. Most marine animals have a wide range; and we have seen that with plants it is those which have the widest range, that oftenest present varieties; so
that that 1859 1860 1861 | that, 1866 1869 1872 |
with shells and other marine animals, it is
probably probably 1859 1860 |
highly probable that 1861 1866 |
probable 1869 1872 |
those which have
had the widest range, far exceeding the limits of the known geological formations of Europe,
which which 1859 1860 | which 1861 1866 1869 1872 |
have oftenest given rise, first to local varieties and ultimately to new species; and this again would greatly lessen the chance of our being able to trace the stages of transition in any one
geological formation. |
Text in this page (from paragraph 3010, sentence 100 to paragraph 3010, sentence 100, word 34) is not present in 1859 |
to rather wider
intervals intervals 1861 1866 1869 1872 | intervals, 1859 1860 |
of time, namely, of time, namely, 1861 1866 1869 1872 |
namely, 1859 1860 |
to distinct but consecutive stages of the same great formation, we find that the embedded fossils, though
almost almost 1859 1860 1861 1866 1869 | almost 1872 |
universally ranked as specifically different, yet are far more closely
related related 1861 1866 1869 1872 | allied 1859 1860 |
to each other than are the species found in more widely separated formations;
so that here again we have undoubted evidence of change, though not strictly of variation, so that here again we have undoubted evidence of change, though not strictly of variation, 1861 1866 |
but to this subject I shall have to return 1859 1860 |
so that here again we have undoubted evidence of change 1869 1872 |
in the
direction required by my theory; but to this latter subject I shall have to return in the following direction required by my theory; but to this latter subject I shall have to return in the following 1861 1866 |
following 1859 1860 |
direction required by the theory; but to this latter subject I shall have to return in the following 1869 |
direction required by the theory; but to this latter subject I shall return in the following 1872 |
chapter. |
|
...OMIT 1866 1869 1872 |
One other consideration is worth notice: 1859 1860 1861 |
With With 1866 1869 1872 | with 1859 1860 1861 |
animals and plants that
....... 1866 1869 1872 | can 1859 1860 1861 |
propagate rapidly and
do do 1866 1869 1872 | are 1859 1860 1861 |
not
wander much, wander much, 1866 1869 1872 | highly locomotive, 1859 1860 1861 |
there is reason to suspect, as we have formerly seen, that their varieties are generally at first local; and that such local varieties do not spread widely and supplant their parent-forms until they have been modified and perfected in some considerable degree. According to this view, the chance of discovering in a formation in any one country all the early stages of transition between any two
such forms, such forms, 1866 1869 | forms, 1859 1860 1861 1872 |
is small, for the successive changes are supposed to have been local or confined to some one spot. Most marine animals have a wide range; and we have seen that with plants it is those which have the widest range, that oftenest present varieties; so
that, that, 1866 1869 1872 | that 1859 1860 1861 |
with shells and other marine animals, it is
highly probable that highly probable that 1861 1866 |
probably 1859 1860 |
probable 1869 1872 |
those which have those which have 1859 1860 1861 1866 |
that those which have 1869 |
that those which 1872 |
had the widest range, far exceeding the limits of the known geological formations of Europe,
....... 1861 1866 1869 1872 | which 1859 1860 |
have oftenest given rise, first to local varieties and ultimately to new species; and this again would greatly lessen the chance of our being able to trace the stages of transition in any
one one 1859 1860 1866 1869 1872 | ony 1861 |
geological formation. |
|
It is a more important consideration,
clearly clearly 1866 | clearly 1869 1872 |
leading to the same result, as lately insisted on by Dr. Falconer, namely, that the
periods periods 1866 | period 1869 1872 |
during which
species have been undergoing species have been undergoing 1866 |
each species underwent 1869 1872 |
modification, though
very
long as
|