120 GRIESBACH: GEOLOGY OF THE CENTRAL HIMALAYAS. 



Fig. 17. The Daldakharak from the Niti pass. 



On the weathered surfaces of the white quartzite (8) sections of 

 shells are plentiful, amongst which an Orthis species seems commonest. 

 Higher up in the ravine which joins the Dhauli Ganga from the right, 

 at the foot of the Niti pass, I found the red Crinoid limestone (7) full of 

 Productus sp., Athyris royssu, etc. The white quartzite, which is in 

 enormously thick banks near the middle of its thickness, becomes more 

 flaggy near the top, and the beds are then a quartz sandstone, finally 

 developing into a calcareous thick-bedded dark grey sandstone full of 

 Productus semi-reticulatus. I have compared both the specimens 

 and the matrix with specimens contained in the Geological Survey 

 Museum, which had been collected at Kuling by Dr. Stoliczka ; both are 

 so close in form and lithological character that they might easily have 

 come from the same locality. 



Near Kuling and Muth in Spiti I found the white quartzite (8) 

 overlaid by a series of beds, containing Productus^. in turn conform- 

 ably followed by a considerable thickness of the dark Otoceras beds. 

 But here in the Niti sections, the Productus shales which are closely 

 ( 120 ) 



