You know the common pink heather--ling, as we call it?
Of course.
Then that ling grows, not only here and in the north and west of Europe, but in the Azores too; and, what is more strange, in Labrador.

Now, as ling can neither swim nor fly, does not common sense tell you that all those countries were probably joined together in old times?
Well: but it seems so strange.
So it is, my child; and so is everything.

But, as the fool says in Shakespeare-- "A long time ago the world began, With heigh ho, the wind and the rain." And the wind and the rain have made strange work with the poor old world ever since.

And that is about all that we, who are not very much wiser than Shakespeare's fool, can say about the matter.

But again--the London Pride grows here, and so does another saxifrage very like it, which we call Saxifraga Geum.