He did not seem to know, and was much surprised at what I stated (I believe correctly) on the close relation between the Kerguelen and T.del Fuego floras.

Forbes is doing apparently very good work about the introduction and distribution of plants.

He has forestalled me in what I had hoped would have been an interesting discussion--viz., on the relation between the present alpine and Arctic floras, with connection to the last change of climate from Arctic to temperate, when the then Arctic lowland plants must have been driven up the mountains.

(317/3.
Forbes' Essay "On the Connection between the Distribution of the Existing Fauna and Flora of the British Isles and the Geological Changes which have affected their Area," was published in 1846.

See note, Letter 20.) I am much pleased to hear of the pleasant reception you received at Edinburgh.