CHAPTER XIX.
Routes from Choongtam to Tibet frontier — Choice of that by the Lachen river — Arrival of supplies — Departure — Features of the valley — Eatable Polygonum — Tumlong — Cross Taktoong river — Pines, larches, and other trees — Chateng pool — Water-plants and insects — Tukcham mountain — Lamteng village — Inhabitants — Alpine monkey — Botany of temperate Himalaya — European and American fauna — Japanese and Malayan genera — Superstitious objections to shooting — Customs of people — Rain — Run short of provisions — Altered position of Tibet frontier — Zemu Samdong — Imposition — Vegetation — Uses of pines — Ascent to Thlonok river — Balanophora wood for making cups — Snow-beds — Eatable mushrooms and Smilacina — Asarabacca — View of Kinchinjunga — Arum-roots, preparation of for food — Liklo mountain — Behaviour of my party — Bridge constructed over Zemu — Cross river — Alarm of my party — Camp on Zemu river.