Comparison with 1869 |
|
excellent naturalists, as Agassiz and Pictet, maintain that all these tertiary species are specifically distinct, though the distinction is admitted to be very slight; so that here, unless we believe that these eminent naturalists have been misled by their
imaginations, imaginations, 1866 1869 1872 | imaginations 1861 |
and that these late tertiary species really present no difference whatever from their living representatives, or unless we believe that the great majority of naturalists are wrong and that the
tertiary species are all truly distinct from the recent, we have evidence of
the frequent occurrence of the frequent occurrence of 1869 1872 |
a very general 1861 |
frequent occurrence of 1866 |
slight
modifications modifications 1866 1869 1872 | modification 1861 |
of
....... 1866 1869 1872 | form of 1861 |
the kind required. Moreover, if
we look to rather wider intervals,
namely,
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
to each other than are the species found in more widely separated formations;
so that here again we have undoubted evidence of change so that here again we have undoubted evidence of change 1869 1872 |
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 |
in the
direction required by the theory; but to this latter subject I shall have to return in the following direction required by the theory; but to this latter subject I shall have to return in the following 1869 |
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 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
|
excellent naturalists, as Agassiz and Pictet, maintain that all these tertiary species are specifically distinct, though the distinction is admitted to be very slight; so that here, unless we believe that these eminent naturalists have been misled by their
imaginations imaginations 1861 | imaginations, 1866 1869 1872 |
and that these late tertiary species really present no difference whatever from their living representatives, or unless we
believe that the great majority of naturalists are wrong and that the believe that the great majority of naturalists are wrong and that the 1861 1869 |
believe that the great majority of naturalists are wrong and that that the 1866 |
admit, in opposition to the judgment of most naturalists, that these 1872 |
tertiary species are all truly distinct from the recent, we have evidence of
a very general a very general 1861 |
frequent occurrence of 1866 |
the frequent occurrence of 1869 1872 |
slight
modification modification 1861 | modifications 1866 1869 1872 |
of
form of form of 1861 | form of 1866 1869 1872 |
the kind required.
If If 1861 1866 1869 1872 | Moreover, if 1859 1860 |
we look 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. |
|
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
|