How curious also is the case of Iceland.

What a splendid paper you have made of the subject.

When we meet I must ask you how much you attribute richness of flora of Lapland to mere climate; it seems to me very marvellous that this point should have been a sort of focus of radiation; if, however, it is unnaturally rich, i.e.contains more species than it ought to do for its latitude, in comparison with the other Arctic regions, would it not thus falsely seem a focus of radiation?
But I shall hereafter have to go over and over again your paper; at present I am quite muddy on the subject.

How very odd, on any view, the relation of Greenland to the mountains of E.N.

America; this looks as if there had been wholesale extinction in E.N.America.