156 KOTATORIA 



L 14. Si)itliu-, "U ihe Indus south of l-ch, altitude .i_'70 m. 



Pool in a swampy meadow, Potamogcton pi-cliiiatus, IJlncithina sp. cliarophytes, etc. 

 pH 8.0. 4 June^ 1932. 



I. 1(). .Spithug, altitude 3270 m. 



Pool a little south of L 16, vegetation similar but l\'tiiiiinculi(s tn'cliopliylliiiii also 

 present. Temp. 1 p. m., 28.7°C. 9 June, 1932. 



T. 32. Zung--lung, Ix-low Shakya-la, altitude 4224 m. 



Algal growth in stream, temp. 2.30 p.m., 5.2, pil 7.V. 24 June, 1932. 



L 3*^. Tsar Tso, IxHween Mugieb and Panggong Tso, altitude 4252. 



Small shallow lake, lacking outlet, about 400 m. in diameter, almost cunipletely full 

 of a water-plant, probably P. pectimtus. Temp. 5 cms. below surface at edge, 



10 a.m., 12.5''C.; pH ".3, 28 June. l')32. 



L 40b. Lagoon 2 at west end of Panggong Tso, altitude 4241 m. 



A long narrow pond shut off from the lake by a bar of sanil and shingle. Brackish, 

 chloride, 0.249 grms. per litre. 30 June, 1932. 



L47. Lnng-yun, above Chagra, Northwest of Panggong Tso, altitude 4977 m. 

 Pools in swampy ground. 9 July, 1932. 



L49. Togom Tso, northwest of Panggong Tso, altitude 5334 m. 



9 July, 1932. This and the ne.xt two localities are discussed in detail Ijclow. 



T, 50. Togarma Tso, northwest of Panggong Tso in the Ko-luiigpa valley, altitude 5217 m. 



10 July, 1932. 



L 52. Ororotse Tso, just south of Chang-chenmo River, altitude 5297 m. 12 July, 1932. 



L 60. Kyam, Chang-chenmo valley, altitude c. 4725 m. 



Largest of several pools fed by non-therinal .spring below terrace. 21 July, 1932. 



L61. Kyam, Chang-chenmo valley, 24 July, 1932. 



Pond in swampy hummock ground, about 5 m. in diameter, with Ranunculus 

 trichophyUiim. 



L71a. T.so Nyak, Tibet, altitude c. 4250 m. 



Visited l)y two Ladakis, Tzewang Tashi and .^niiam Tergas, wlm made littoral tow- 

 nettings in the western part of the lake. Though the water of the lake drains into 

 Panggong Tso it is probably slightly mineralised; a sample lirought back to camp 

 had a ])1 i value of 8.9. 12 August, 1932. 



L 74. Tangur Tso, Tibet, altitude 4329 m. 



Large lake lacking outlet studied at the west end, where the maximum tlepth was 

 9.5 ni. Littoral vegetation abundant, not flowering but probably P. pcctinatus. 

 Temp. 14.1-15.1, pH 9.6-|-. Collections 14 August, 1932. 

 L 74 (1) marginal, L 74 (2) open-water plankton. 



