130 Beport on the Progress of the Magnetic Survey. [No. 2. 



In the western Kuenluen, the fan-like structure is exceedingly 

 well developed, the Mustak Pass lies in just about the position, 

 where the cleavage lines run vertically ; to the westward of Mustak, 

 the dip is easterly ; to the eastward the dip of the cleavage is quite 

 in the opposite direction. 



13. In the Kueuluen, no fossiliferous strata have been met 

 with ; the crystalline limestone and gypsum strata which occur in 

 many places form part of the metamorphic micaceous shists, be- 

 tween which they are interposed. 



Associated with the gypsum are found in many places hot miner- 

 al springs, mostly sulphureous. The hot springs and the gypsum 

 can be traced all along the southern part of the Kuenluen from 

 the origin of the Indus near the Mansarauer Lake to the western 

 Kuenluen around Mustak. We had the opportunity of examining 

 in this range hot springs in more than ten different localities. Some 

 of the springs have a temperature of 90° to 92° centigrade at eleva- 

 tions of 11,000 to 12,000 Eng. feet above the sea ; they must be 

 reckoned amongst the hottest springs in the world. 



14. The fossiliferous strata which have been described last year 

 in Gnari Khorsum near the origin of the Sutlej, form a pretty con- 

 tinuous band at the northern foot of the Himalaya all along through 

 Western Thibet. 



In many places, for instance in Spiti, Zanskar and near Iscardo, 

 fossil remains have been found perfectly identical with the species, 

 collected last year in the more eastern parts of Thibet. 



The strata contain fossils from the silurian up to the oolitic 

 group, but no cretaceous fossils, and no nummulites occur on the 

 northern side of the Himalayan water-shed. The fossiliferous strata 

 have been altered in many localities by intrusive greenstones, which 

 sometimes occur in very considerable masses. 



15. On the southern side of the main range of the Himalaya, 

 fossiliferous sedimentary strata of great extent are met with. 



Already last year, I had the opportunity of pointing out the fact, 

 that the true crystalline felspathic rocks, granite and gneiss, occupy 

 a comparatively small surface in these mountain systems. These 

 rocks form a number of groups of very different size, and in some 

 places, for instance to the northward of Kashmeer, the extent of the 



