| → relation (as we shall hereafter see) 1859 1860 1861 |
| affinity 1866 1869 1872 |
|
| → distribution of mammals and the depth 1859 1860 1861 |
| mammals inhabiting islands with those 1866 1869 1872 |
|
| → sea,— 1859 1860 1861 |
| nearest continent, being in part determined (as we shall hereafter see) by the depth of the intervening ocean,— 1866 1869 1872 |
|
| → seem to me 1859 1860 1861 1866 1869 |
| are 1872 |
|
| → likewise seem to me 1859 1860 1861 1866 1869 |
| are likewise 1872 |
|
| → favour 1859 1860 1861 |
| of such islands favour 1866 1869 1872 |
|
| → mountain-ranges on the land, some at least of the islands would have been formed, like other 1859 1860 1861 |
| continental mountain-ranges, some at least of the islands would have been formed, like other 1869 1872 |
| OMIT 1866 |
|
| → distribution. 1859 1860 1861 1866 1869 |
| distribution. I shall here confine myself to plants. 1872 |
|
| → for transport across the sea, the greater or less facilities 1859 1860 1861 1866 1869 |
| the greater or less facilities for transport across the sea 1872 |
|
|
with each other, and with the many existing oceanic islands. Several facts in distribution,— such as the great difference in the marine faunas on the opposite sides of almost every continent,— the close relation of the tertiary inhabitants of several lands and even seas to their present inhabitants,—
degree of
→relation (as we shall hereafter see)
between the
→distribution of mammals and the depth
of the
→sea,—
these and other such facts
→seem to me
opposed to the admission of such prodigious geographical revolutions within the recent period, as are
on the view advanced by Forbes and admitted by his
followers. The nature and relative proportions of the inhabitants of oceanic islands
→likewise seem to me
opposed to the belief of their former continuity with continents. Nor does
almost universally volcanic composition
→favour
the admission that they are the wrecks of sunken continents;— if they had originally existed as
→mountain-ranges on the land, some at least of the islands would have been formed, like other
mountain-summits, of granite, metamorphic schists, old fossiliferous
other
rocks, instead of consisting of mere piles of volcanic matter. |
|
| I must now say a few words on what are called accidental means, but which more properly
be called occasional means of
→distribution. I shall here confine myself to plants. In botanical works, this or that plant is
to be ill adapted for wide dissemination; but
→for transport across the sea, the greater or less facilities
may be said to be almost wholly unknown. Until I tried, with Mr.
aid, a few experiments, it was not even known how far seeds could resist the
action of sea-water. To my surprise I found that out of 87 kinds, 64 germinated after an immersion of 28 days, and a few survived an immersion of 137 days.
|
