1856.] Report of the Magnetic Survey of India. 109 



On the 19th of September, he returned by the Nelong Pass 

 (18,110 E. E.) from Thibet into the Himalayas properly so called? 

 arriving at Nelong on the upper branch of the Bhagarutti, or "West- 

 ern Ganges, on the 24th of September, and reaching the village 

 Mukba, a little beyond Gangotri, on the 27th of September. 



A high pass, (3rd October 17,610 E. E.) leading from Mukba 

 to the origin of the Tonse Eiver, offered a good opportunity for 

 examining the very remarkable Geological structure of the high 

 groups of the Jumnotri and Dundar peaks. 



From the Tonse, he went up to Kedar Kanta (12,630 E. E.,) an 

 isolated Mountain, commanding a very extensive view, and after 

 staying there two days (12th and 13th of October), went down 

 along the Jumna valley to Mussoorie, which he reached on the 18th 

 of October. 



The second of us, Eobert, left Badrinath on the 7th of Sep- 

 tember, having been engaged for some days with Photographical 

 experiments. 



He went down by Tosheemath and Okimath to Kedarnath Temple, 

 where he employed three days, (21st to 23rd September,) in examin- 

 iog the structure of the Kedarnath glacier and the Topography of 

 the Mountain system between Kedarnath and Gangotri. Sending 

 round the baggage by the ordinary road, he himself crossed over a 

 series of passes from 11 to 12,000 feet to Salung, on the Bhagarutti 

 Eiver, where he arrived on the 3rd of October. These passes offered 

 a good opportunity for the determination of the limits of vegetation 

 in the central parts of the Himalaya for comparison with similar 

 observations which had been previously made on the higher passes 

 leading out to Thibet. 



Erom the Bhagarutti he crossed over the Chaia and Bainsura 

 Passes (15,280 E. E.) to Jumnotri, and there examined the remark- 

 able hot-springs ; the temperature of the warmest is 89° centigrade, 

 being nearly equal to the temperature of boiling distilled water at 

 this place (90.50° cent). He filled here, as well as at the hot 

 springs of Badrinath, Gaurikund, Uri and Banassa, a considerable 

 number of fine glass bottles with water, and we hope that the 

 chemical analysis of these waters may not prove without some 

 interest hereafter. He went down along the Jumna Eiver to Mus- 

 soorie, where he arrived on the 21st of October. 



