There are twenty-six
→of
→twenty-one or perhaps twenty-three are ranked
as distinct species,
→and would commonly be assumed
to have been
yet the close affinity of most of these birds to American species
→is manifest in
every character, in their habits, gestures, and tones of
So it is with the other animals, and with
→a large proportion of
the plants, as shown by Dr. Hooker in his admirable
→OMIT
Flora of this archipelago. The naturalist, looking at the inhabitants of these volcanic islands in the Pacific, distant several hundred miles from the continent,
feels that he is standing on American land. Why should this be so? why should the species which are supposed to have been created in the Galapagos Archipelago, and nowhere else, bear so
stamp of affinity to those created in America? There is nothing in the conditions of life, in the geological nature of the islands, in their height or climate, or in the proportions in which the several classes are associated together, which
the conditions of the South American coast: in
there is a considerable dissimilarity in all
respects. On the other hand, there is a considerable degree of resemblance in the
nature of the soil, in
height, and size of the islands, between the Galapagos and Cape de Verde
but what an entire and absolute difference in their inhabitants! The inhabitants of the Cape de Verde Islands are related to those of Africa, like those of the Galapagos to America.
→Facts such as these, admit of
no sort of explanation on the ordinary view of independent
whereas on the view here maintained, it is obvious that the Galapagos Islands would be likely to receive
→from America, whether
by occasional means of
or
→(though I do not believe in this doctrine) by
formerly continuous land,
the Cape de Verde Islands from Africa;
such colonists would be liable to
the principle of inheritance still betraying their original birthplace. |
Many analogous facts could be given: indeed it is an almost universal rule that the endemic productions of islands are related to those of the nearest continent, or of
→the nearest large
The exceptions are few, and most of them can be explained. Thus
→although
Kerguelen
nearer to Africa than to America,
→the plants are
related, and that very closely, as we know from Dr. Hooker's account, to those of America: but on the view that this island has been mainly stocked by seeds brought with earth and stones on icebergs, drifted by the prevailing currents, this anomaly disappears. New Zealand in its endemic plants is much more closely related to Australia, the nearest mainland, than
|