Another pest is a small midge, or sand-fly, which causes intolerable itching, and subsequent irritation, and is in this respect the most insufferable torment in Sikkim; the minutest rent in one's clothes is detected by the acute senses of this insatiable bloodsucker, which is itself so small as to be barely visible without a microscope. We daily arrived at our camping-ground, streaming with blood, and mottled with the bites of peepsas, gnats, midges, and mosquitos, besides being infested with ticks. As the rains advanced, insects seemed to be called into existence in countless swarms; large and small moths, cockchafers, glow-worms, and cockroaches, made my tent a Noah's ark by night, when the candle was burning; together with winged ants, May-flies, flying earwigs, and many beetles, while a very large species of _Tipula_ (daddy-long-legs) swept its long legs across my face as I wrote my journal, or plotted off my map. After retiring to rest and putting out the light, they gradually departed, except a few which could not find the way out, and remained to disturb my slumbers. Chakoong is a remarkable spot in the bottom of the valley, at an angle of the Lachen-Lachoong, which here receives an affluent from Gnarem, a mountain 17,557 feet high, on the Chola range to the east.* [This is called Black Rock in Col. Waugh's map. I doubt Gnarem being a generally known name: the people hardly recognise the mountain as sufficiently conspicuous to bear a name.] There is no village, but some grass huts used by travellers, which are built close to the river on a very broad flat, fringed with alder, hornbeam, and birch: the elevation is 4,400 feet, and many European genera not found about Dorjiling, and belonging to the temperate Himalaya, grow intermixed with tropical plants that are found no further north. The birch, willow, alder, and walnut grow side by side with wild plantain, _Erythrina, Wallichia_ palm, and gigantic bamboos: the _Cedrela Toona,_ figs, _Melastoma, Scitamineae,_ balsams, _Pothos,_ peppers, and gigantic climbing vines, grow mixed with brambles, speedwell, _Paris,_ forget-me-not, and nettles that sting like poisoned arrows. The wild English strawberry is common, but bears a tasteless fruit: its inferiority is however counterbalanced by the abundance of a grateful yellow raspberry. Parasitical Orchids (_Dendrobium nobile,_ and _densiflorum,_ etc.), cover the trunks of oaks, while _Thalictrum_ and _Geranium_ grow under their shade. _Monotropa_ and _Balanophora,_ both parasites on the roots of trees (the one a native of north Europe and the other of a tropical climate), push their leafless stems and heads of flowers through the soil together: and lastly, tree-ferns grow associated with the _Pteris aquilina_ (brake) and _Lycopodium clavatum_ of our British moors; and amongst mosses, the superb Himalayan _Lyellia crispa,_* [This is one of the most remarkable mosses in the Himalaya mountains, and derives additional