1842.] of the Himmalaya Mountains. xlix 



Koond, occurs a type in which the nodules of felspar assume a lenti- 

 cular shape. The ground being a dark grey, and this mineral of a 

 snowy whiteness, makes it occasionally a very beautiful rock. Beyond 

 Bhyro Ghate, the rock is scarcely accessible in situ, but the angular 

 fragments, which are very numerous, are sufficiently indicative of its 

 nature, and prove that the surrounding peaks and ridges are chiefly, 

 if not wholly, gneiss. And the correspondence of appearance between 

 the nearer ridges, which have evidently furnished these fragments, and 

 the great Soommero or Kedurnauth peak attest the fact that here also, 

 as at the head of the Ganges, this rock attains an elevation of nearly 

 23,000 feet. 



96. The dip of this rock is more regular within this tract than in the 

 neighbourhood of the Sutlej. In the bed of the river below Ookeernauth, 

 near the Joola, it was observed to be from 8° to 20° N. E., while 

 the inclination was 30°. Between Mykunda and Bhet, the dip was 

 found to be twenty-five to forty-five N. W., and a little beyond this, due 

 North. Beyond Mykunda again, it was observed 50° N. E. Beyond 

 Borosa, it is also E. of N. ; but the strata have a secondary set of divi- 

 sions which are at right angles to the former, and consequently dip in 

 the opposite direction. The first set have but little inclination. The 

 latter are nearly perpendicular. This is an appearance often met with, 

 and it is sometimes difficult to say, which are and which are not the 

 stratiform divisions. Those have been generally adopted which corres- 

 pond to the general run of the neighbouring strata. At the fine section 

 near Jilmilputtun, the strata which are from four to ten feet in thick- 

 ness, dip 10° N. E., at an inclination of 30°. After crossing the river, 

 the dip is 30° N. E., the inclination the same. 



97. The only beds observed are one of micaceous schist near Nalaput- 

 tun, — if this be not indeed a gneiss with less felspar than usual, and an 

 instance of that oscillation which is observed between rocks so nearly 

 allied in origin and structure as these two ? It is remarkable for con- 

 taining the largest garnets (common) I have seen in these mountains. 

 Their figure is however irregular. The specific gravity I determined to 

 be about 3.8. This is rather higher than the determination hitherto 

 made, but I think it must be evident to any one, who will examine the 

 uninterrupted series of gravities between common and precious garnets, 

 and will also consider the variations in the analysis, that the former is 



H 



