is the double peak, Tsagi, with its very steep slopes to the S. W. and called Tsogi by another informant. The same mountain will easily be recognized on Pan. 113 from Camp XCIX where it is visible to the N. 68° W., and on Pan. 1 16B, from Camp C where it is seen to the N. 46° W. A pyramidal peak to the right or east of it will also easily be recognized on the different panoramas. These and many other mountains on the panoramas just mentioned may readily be fixed on the map. To the right of the last-mentioned peak, or N. 42° W. on Pan. 1 2 oA, we have the Taklalomsing, also called Kangdigar, or Gangdigar, a pyramidal snow-peak, near the southern base of which, is the shore of Dangra-yum-iso. It seems to belong to the same range which we crossed in Laen-la. To the N. 3o° W. is the peak and mountain group, Loping-nap/a, belonging to the same range. Gursing-nagya, N. 6° W. is, as mentioned above, situated on the western side of the Laen valley. To the N. 2 8° E., is the snow-covered pyramidal peak of Polug. To the right of it, or S. 33° E. is Pu-ngumpo, and still farther east, or N. 61° E., Langchen-kabrak, or perhaps properly Langchen and Kabrak, signifying two peaks.
To the south of the S. W. part of the lake, there is as a gateway between the mountains called Dungse, by which a road is said to go to the district of Sangke 3 or 4 days distant. The name Dungse, reminds us of Nain Sing's Dungche-cho as another name for Nganglse-iso, for he usually writes ch instead of Is. Marchar-lso is well-known everywhere; Gari-lso, also mentioned as being situated east of Nganglse-iso, is impossible to identify, though it may exist east of Marchar-lso. Tagerak-langu, mentioned as being located south of Camp CI, is probably the name of the whole plain at the sides of Tagrak-isangpo, and should, therefore, better be spelled Tagraklangu. Tagrak-rung is probably simply the valley of Tagrak-tsangpo. In connection with Logung-napia and Lamdang, which by other informants were pronounced Logung-nakia and Landang, some other names were given, though only a few of them can be located : Lopo-iuii, Na-chugo perhaps identical with Nain Sing's Chuku, Tsong, Na-nagor, Tunglung, Kala situated south of tke lake, Tung/se, Mukbo-chungra, Savo-iunpo, Gyangise, Damchen, Karep, Ayela-kusho, Salung, Pong-chen, the pass mentioned above, Kai-kelsung. To the S. E. Togi, Tsilak, Kung= rapka and Shichak were situated. Chimdan-la was a pass south of Marchar-lso. Here, for the first time, I heard of the mountain, Pabla, which was said to be situated south of the first ranges to the south of Nganglse-tso, information which later on proved to be correct. Many of the names I heard, agree perfectly with those given by Nain Sing. On the other hand, he has some names which I could not identify and which the Tibetans pretended not to have heard. This does not, however, prove
that they are incorrect.
The nomads we met on the southern shore, asserted that the lake freezes in the beginning of November and remains frozen to the beginning of April, which
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