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 down by an unnamed river from the glaciers, and its consequent filling up on the west side. We crossed the plain in a violent hailstorm, and camped in the middle of it on a bare and exposed yak station called Sagang, in sight of the lake. The Tongsa accompanied me to the top of the pass, where he took his leave, presenting me with scarves of different colours, a pretty custom which is both picturesque and at the same time expressive of the most cordial good feeling.

From the downs at Sagang I had a clear view of the snow-hills which form the boundary between Bhutan and Tibet, with the country to the north of the hills clearly to be seen and the courses of the rivers quite plainly visible. Fortunately, some of the dopkas (yak herdsmen) had pitched tents, which were most welcome, as there was a very strong, cold wind blowing, and, the march having been a long one, our things did not arrive till late. En route we saw some ovis ammon, but did not shoot any. We had to cross the large river which takes its rise on the north of the snows forming the boundary between Bhutan and Tibet and runs into the west end of the lake, and had some difficulty in finding a ford, as the bed was full of quicksands, but eventually a herdsman showed us one, and also told us there were only two places at which it could be crossed in safety. This man came from a very large encampment of herdsmen, who had hundreds of yaks and a few sheep in their care. They were extremely hospitable, spread carpets for us to sit on, and gave us fresh milk and Tibetan tea, as well as parched barley. It was a curious sight to watch the milking of the yaks, the method being, to say the least of it, peculiar, and one I had not seen or heard of elsewhere in Tibet.

I made a very early start from Sagang, and after climbing 600 feet came to the watershed between the lake basin and the Nyeru-chhu. These hills are nearly all rounded, with very few precipices, and are evidently much frequented by both ovis ammon and burhel, for I saw numerous fine