Comparison with 1872 |
|
small areas in the Old World could
be pointed out hotter than any
in the New
World,
hotter than any in the New World; but hotter than any in the New World; but 1872 |
yet 1859 1860 1861 1866 |
hotter than any in the New World, but 1869 |
these are not inhabited by a peculiar
fauna
different from that of the surrounding districts; for it is rare to find a group of organisms confined to a small area, of which the conditions are peculiar in only a slight degree. different from that of the surrounding districts; for it is rare to find a group of organisms confined to a small area, of which the conditions are peculiar in only a slight degree. 1872 |
or flora. 1859 1860 1861 1866 |
different from that of the surrounding districts; for it is very rare to find a group of organisms confined to a small area, having conditions peculiar in only a slight degree. 1869 |
Notwithstanding this parallelism
in the conditions of the Old and New Worlds, how widely different are their living productions! |
|
In the southern hemisphere, if we compare large tracts of land in Australia, South Africa, and western South America, between latitudes
25° 25° 1859 1860 1861 1872 | 25° 1866 1869 |
and
35°, 35°, 1859 1860 1861 1872 | 35°, 1866 1869 |
we shall find parts extremely similar in all their conditions, yet it would not be possible to point out three faunas and floras more utterly dissimilar.
Or, Or, 1872 | Or 1859 1860 1861 1866 1869 |
again
we may compare the productions of South America south of lat.
35° 35° 1859 1860 1861 1872 | 35° 1866 1869 |
with those north of
25°, 25°, 1859 1860 1861 1872 | 25°, 1866 1869 |
which consequently inhabit a
considerably different
conditions; yet they are conditions; yet they are 1872 |
climate, and they will be found 1859 1860 1861 |
climate, yet they are 1866 |
conditions, yet they are 1869 |
incomparably more closely related to each other,
than they are to the productions of Australia or Africa under nearly the same climate. Analogous facts could be given with respect to the inhabitants of the sea. |
|
A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration, are related in a close and important manner to the differences between the productions of various regions. We see this in the great difference
in in 1872 | of 1859 1860 1861 1866 1869 |
nearly all the terrestrial productions of the New and Old Worlds, excepting in the northern parts, where the land almost joins, and where, under a slightly different climate, there might have been free migration for the northern temperate forms, as there now is for the strictly arctic productions. We see the same fact in the great difference between the inhabitants of Australia, Africa, and South America under the same
latitude; latitude; 1872 | latitude: 1859 1860 1861 1866 1869 |
for these countries are almost as much isolated
|
small areas
can can 1869 1872 |
in the Old World could 1859 1860 |
in the Old World can 1861 1866 |
be pointed out
...OMIT 1869 1872 |
hotter than any 1859 1860 1861 1866 |
in the
Old Old 1869 1872 | New 1859 1860 1861 1866 |
World World 1869 1872 | World, 1859 1860 1861 1866 |
hotter than any in the New World, but hotter than any in the New World, but 1869 |
yet 1859 1860 1861 1866 |
hotter than any in the New World; but 1872 |
these are not inhabited by a
....... 1869 1872 | peculiar 1859 1860 1861 1866 |
fauna
different from that of the surrounding districts; for it is very rare to find a group of organisms confined to a small area, having conditions peculiar in only a slight degree. different from that of the surrounding districts; for it is very rare to find a group of organisms confined to a small area, having conditions peculiar in only a slight degree. 1869 |
or flora. 1859 1860 1861 1866 |
different from that of the surrounding districts; for it is rare to find a group of organisms confined to a small area, of which the conditions are peculiar in only a slight degree. 1872 |
Notwithstanding this
general parallelism general parallelism 1869 1872 | parallelism 1859 1860 1861 1866 |
in the conditions of the Old and New Worlds, how widely different are their living productions! |
|
In the southern hemisphere, if we compare large tracts of land in Australia, South Africa, and western South America, between latitudes
25° 25° 1866 1869 | 25° 1859 1860 1861 1872 |
and
35°, 35°, 1866 1869 | 35°, 1859 1860 1861 1872 |
we shall find parts extremely similar in all their conditions, yet it would not be possible to point out three faunas and floras more utterly dissimilar.
Or Or 1859 1860 1861 1866 1869 | Or, 1872 |
again, again, 1866 1869 1872 | again 1859 1860 1861 |
we may compare the productions of South America south of lat.
35° 35° 1866 1869 | 35° 1859 1860 1861 1872 |
with those north of
25°, 25°, 1866 1869 | 25°, 1859 1860 1861 1872 |
which consequently
are separated by a space of ten degrees of latitude and are exposed to are separated by a space of ten degrees of latitude and are exposed to 1869 1872 |
inhabit a 1859 1860 1861 |
are separated by a space of ten degrees of latitude and live under a 1866 |
considerably different
conditions, yet they are conditions, yet they are 1869 |
climate, and they will be found 1859 1860 1861 |
climate, yet they are 1866 |
conditions; yet they are 1872 |
incomparably more closely related to each
other other 1861 1866 1869 1872 | other, 1859 1860 |
than they are to the productions of Australia or Africa under nearly the same
climate. climate. 1860 1861 1866 1869 1872 |
climate. Analogous facts could be given with respect to the inhabitants of the sea. 1859 |
Analogous facts could be given with respect to the inhabitants of the sea. |
|
A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration, are related in a close and important manner to the differences between the productions of various regions. We see this in the great difference
of of 1859 1860 1861 1866 1869 | in 1872 |
nearly all the terrestrial productions of the New and Old Worlds, excepting in the northern parts, where the land almost joins, and where, under a slightly different climate, there might have been free migration for the northern temperate forms, as there now is for the strictly arctic productions. We see the same fact in the great difference between the inhabitants of Australia, Africa, and South America under the same
latitude: latitude: 1859 1860 1861 1866 1869 | latitude; 1872 |
for these countries are almost as much isolated
|