The vegetation in the three sets of springs was very different. As regards the _Confervae,_ taking the word in its older sense, the species in the three are quite different, and even in respect of genera there is little identity, but amongst the _Diatomaceae_ there is no striking difference, except in those of the Behar springs where three out of the four did not occur elsewhere. In the Pugha and Momay springs, the species were either identical with, or nearly allied to those found in neighbouring localities, where the water did not exceed the ordinary temperature. A longer examination will doubtless detect more numerous forms, but those which appear on a first examination are sure to give a pretty correct general notion of the vegetation. The species are certainly less numerous than I had expected, or than might be supposed from the vegetation of those European hot springs which have been most investigated. In conclusion, I shall beg to add a few words on the Fungi of the Himalayas, so far as they have at present been investigated. As regards these there is a marked difference, as might be anticipated from the nature of the climates between those parts of Tibet investigated by Dr. Thomson, and the more southern regions. The fungi found by Dr. Thomson were but few in number, and for the most part of very ordinary forms, differing but little from the produce of an European wood. Some, however, grow to a very large size, as for instance, _Polyporus fomentarius_ on poplars near Iskardo, exceeding in dimensions anything which this species exhibits in Europe. A very fine _AEcidium_ also infests the fir trees (_Abies Smithiana_), a figure of which has been given in the "Gardeners' Chronicle," 1852, p. 627, under the name of _AEcidium Thomsoni._ This is allied to the Hexenbesen of the German forests, but is a finer species and quite distinct. _Polyporus oblectans, Geaster limbatus, Geaster mammosus, Erysiphe taurica,_ a _Boletus_ infested with _Sepedonium mycophilum, Scleroderma verrucosum,_ an _AEcidium,_ and a _Uromyces,_ both on _Mulgedium Tataricum,_ about half-a-dozen Agarics, one at an altitude of 16,000 feet above the Nubra river, a _Lycoperdon,_ and _Morchella semilibera,_ which is eaten in Kashmir, and exported when dry to the plains of India, make up the list of fungi.