xlvi Report of the Mineralogical Survey [No. 126*. 



However this may be, I ought to notice that it is of limited extent in 

 this direction, certainly not exceeding a square of 500 yards. 



90. The band of gneiss thus traced out from a recent visit, may have 

 its limits increased by a reference to notes made in a former journey. The 

 particulars will not be so minute, and specially the dip and inclination 

 are wanting, as an examination of the rocks was then a secondary object, 

 and the subject not so familiar. But they will be sufficient to establish 

 the great extent of the gneiss formation, and I ought to add, that of the 

 few particulars I am to mention, there can be no doubt ; as I made an 

 ample collection of specimens which I afterwards examined at my leisure, 

 with the opportunity of consulting those who were well acquainted 

 with the subject. 



9 1 . On the Gonass Pass, five and half miles east of the Brooang Pass, 

 (Art. 84,) and elevated 15,516 feet above the sea, the rock is a small 

 grained, dark coloured gneiss, with the lamina rather indistinct, and often 

 breaking with a conchoidal fracture. The dark colour is owing to the 

 mica, which is black. The ingredients are most intimately mixed, and 

 scarcely to be discriminated by the unassisted eye. In the descent thence 

 to the bed of the Buspa, (about 9,000 feet,) the rock is seldom visible, but 

 at Singlo (9,178), and thence in the ascent to the Harung Pass (14,500), 

 the rock is gneiss. At Mibar (9,698), the same rock prevails, and indeed 

 as far as Pooaree on the Sutlej, between Pooaree and Poorboonnee, a 

 crumbly white granite is met with, the type of which, as far as my 

 memory can guide me, is to be found in other parts of these mountains, 

 and will be described further on (Art. 264). From a recent examination 

 between Poorboonnee and Reeba, masses or beds occur, but of limited 

 extent, of a rock, consisting almost wholly of felspar, generally in a 

 state of decomposition. It is probably a granite. From Reba to 

 Rispa is again well-defined gneiss, which on the ascent above Moorung, 

 is exchanged for clay slate. The clay slate continues by Nissung 

 to very near Dabbling. Just above Dabbling, a mass of granite oc- 

 curs, the true relation of which I cannot attempt to give at this 

 distance of time. From Dabbling to Shipkee gneiss prevails, the laminae 

 and even strata frequently very much contorted, particularly at a pre- 

 cipice in the river bed between Doobling and Namja. Between Namja 

 and Shipkee, it is imperfectly laminar, has a small grain, and is of 

 a bluish grey colour. Beyond Shipkee, that is east of it, as far as it 



