128 JReport on the Progress of the Magnetic Survey. [No. 2. 



Camp near Mustak glacier, 24th, 25th and 26th 



August, (16,000) 10-1 



Astor Fort, 10th and 11th Septr., (7,600) .... 16-0 



Pattere Brock, 13th and 14th, (10,800) 12-3 



Ladakh, 11,700 Eng. feet ascertained by my 

 brothers. 



„ Average for July,. . . . 17-6 



„ „ August, 20-0 



,, „ September, 19-5 



Kashineer average, for October, for 1 meter,.. 18-5 

 The numbers in the above table show the very considerable tem- 

 perature of the ground at 1 meter below the surface in the valleys 

 of the Kuenluen during summer. It is considerably higher than 

 the temperature at equal heights and equal depths below the surface 

 in the Himalaya mountains. 



This fact is especially due to the rains in the Himalayas which 

 tend to cool the ground. 



In the Kuenluen on the contrary the ground is very dry, and 

 considerably heated by a nearly uninterrupted insolation. 



8. The following are the results obtained for the temperature of 

 the ground at great depths below the surface, where the tempera- 

 ture may be assumed to be very nearly stationary. Small wells 

 were dug for the purpose, and the insensible thermometers inserted 

 in the bottom ; the hole was filled up entirely and only re-opened 

 after a considerable time. 



Ladakh. Ascertained by my brothers 43| feet 



below the surface, July, 13.4° Cent. 



Iscardo, — 'temperature of several springs at the 

 foot of small hills and at the foot of high banks 



of alluvial clay, 14.4 to 14.6 



Kashmeer, 36 Eug, feet, October, 17.0 



The following were the temperatures observed in the same locali- 

 ty at Kashmeer at different depths below the surface. 



At 32 Eng. feet below the surface, 17 °.2 



At 21| do. do 17.4 



At 6£ feet average for October, 18.5 



llawul Piudee, at 47 feet, 9 inches, November, 20.05 



