520 Account of a visit to the Jugloo [No. G: 



continuation of the great Himalayan, though their height ranges from 

 7 to 8,000 feet, and at one point the Duffa Bhoom reaches to 

 14,500, and the Thigoroe, twenty miles North of the Brahmapooter 

 at Saikwah, 11,000. These mountains are evidently the Udaya, or 

 " mountains of the rising sun" of the Hindus. The true Himalayan 

 appear to end in a direction nearly North of Dibrooghur in Latitude 

 28.40, or 29 probably — and from the gorge of the Dihong several 

 hill ranges diverge to the S. W. and West : that which bounds the 

 Assam plain is not more than sixteen miles distant from the Brahma- 

 pooter. The intervening country is a deposit of no great age, and 

 has no doubt been formed by the Lohita or Dihong, which is known 

 to have run under these hills. The small rivers passing through 

 this tract have their sources a short distance within the hills, and 

 are all auriferous in their pebbly beds. They are the Sillee, Deemo, 

 Dirgemo, Seesee, and Dob. The rock strata of the hills are sedi- 

 mentary — one, a coarse grit composed of granite debris — another 

 finer and of a bluish colour containing sulphuret of iron — both 

 appear to imbed lignites and fossil wood. The boulders in the 

 rivers, besides those of the grits noticed, are of the older rocks, such 

 as are found in the larger rivers to the East, with the exception of 

 the serpentine. In and about the gorge of the Seesee, it was 

 observed that the sedimentary rock rested on a stratum of rubble 

 of these older rocks cemented together by a ferruginous sand con- 

 taining gold. This sedimentary rock stratum is of great thickness 

 within the hills, and a similar deposit is to be found along the line 

 of hills further to the "West : near the gorge of the Boroli Gunga in 

 the Chardwar district, a tuffaceous limestone is in situ. Salzes also, 

 similar to those on the South side of the valley, are very common, 

 and it is an interesting geological fact, that, as the stratum on the 

 Southern mountains is tilted up at an angle of 45° to the East, the 

 sedimentary rock stratum of these hills is tilted up to the North 

 West and West, and the stratum of the Brahma Koond to the 

 North East. 



The granites, primitive limestone and serpentine are highly metal- 

 liferous. Black magnetic oxide is to be found in the first and last 

 named rock, and sulphuret of iron in the limestone. In the ore 

 found in some of the serpentines there are traces of copper if not 



