ROTATORIA 157 



L 72. Chushol, S. of Panggong Tso, altitude 4491 m. 

 Large pond south of village. 9 August, 1932. 



L 72a. Chushol, S. of Panggong Tso, altitude c. 4491 m. 

 Small pool by L 72. 9 August, 1932. 



L 7Z. Chushol, S. of Panggong Tso, altitude c. 4330. 



Pond with large spherical algal colonies, N. of village. 10 August, 1932. 



L 76. Mitpal Tso, Ijetween Chushol and the Indus Valley, altitude 4875 m. 



Small lake lacking outlet, max. depth 24 m. Plankton from middle of lake, surface 

 temp. 12.49^C., pH 9.1. 17 August, 1932. 



L 78. Yaye Tso, draining into Indus, altitude 4686 m. 



Small lake, max. depth 18.1 m. Planktim from middle of lake, surface temp. 

 14.19 C, pH 8.7. 19 August, 1932. 



L 82. Tso Moriri, Rupshu, altitude 4528 m. 



Very large lake, with a max. depth probalily in excess of 50 m. Plankton from 

 northern part of lake, temp, surface 11.73, pH 9.0. 28 August, 1932. 



L 82a. Estuary at Peldo-le, northern end of Tso Moriri, altitude 4528 m. 



Temp. 14.9^C. Water much fresher than in lake. Consideral)le amounts of water- 

 weed, presumably P. pecfinatiis. 



L 85. Sta-rtsak-puk Tso, Rupshu, altitude 4536 m. 



Small very shallnw freshwater lake flowing into the salt lake Tso Kar. 4 Septem- 

 ber, 1932." 



L 86. Tso Kar. Rupshu. 



Shallow salt lake, abcjut 2 m. deep, chloride 11.66 gms. per litre, pH 8.9. 5 Septem- 

 ber, 1932. 



L 86a. Pool by Tso Kar, Rupshu. altitude 4527 m. 



Slightly brackish pool by salt lake, chloride .078 gms. per litre, pH 9.2. 5 September, 

 1932. ' 



N. Localities in the Nilgiri Hills, Madras Presidency. 



N 2. Ootacamund, altitude c. 2255 m. 



Pond on Marimund Rd., about 50 m. in diameter, blue waterlilies and Utrieularia. 

 Temp. 16.1-17.0 C, pH 6.6. 7 November, 1932. 



N 3. Ootacamund, aUitude c. 2255 m. 



Small pond in swamp above N 2, about 13 m. across, temp. 16.5. 7 November, 1932. 



N 5. Ootacamund, altitude c. 2201 m. 



Lake near the town, very turbid owing to recent rains, small amount of l)lue water- 

 lily. Temp. 17.5, pH 6.6. 8 November, 1932. 



