[vOL. XTI. 
G.'i Records of the Geotofieal Surrey of India. 
described as occun-ing in tbe ridge south of Cliango; in both i-idges white and 
grey quartzites occur in connection w ith them; but the whole hill-side is covered 
with talus, and only little outcrops of rocks in situ are seen here and there. The 
pink limestones at the commencement of the ascent dip north-north-east and 
novth-by-east, but the dark calcareous slates are generally vertical or dip about 
in all directions. At the bridge over the Chadaddokpo the crystallines (mica 
schists and gneiss well riddled with albite granite as usual) re-appear in force 
on both banks of the stream. They appeared to extend a considerable way 
down the stream. Dip here north-west by-w'est. On rising from the bed of 
the river I came again to unaltered whitish blue limestones, whilst beyond, in 
the same line of strike, the mica schists and granite re-ajjpeared. In the bed of 
the Para river the gneiss is so riddled with granite that its metamoi’phic charac¬ 
ter is nearly obliterated. 
Proceeding w^estwards from the camping ground on the banks of the Para 
river (elevation 10,580 feet) the rocks are at first white quartzites dipping east- 
by-south ; then follow compact blue slaty limestones, and then a pale salmon pink 
limestone weathering a light ochi’e brown. The blue beds break up into thin 
slatj' slices, and the whole, no doubt, are a continuation of the beds seen at 
Change. They continue over the ridge down to the Ghu river. As the stream 
is neared the white quartzite seen on the banks of the Para re-appears, dipping 
east-north-east and north-east-by-east. It w-eathers a reddish-brown. Below it 
are grey quartzites, and below the latter, in the bed of the stream, is a pale 
wdiitish-grey slate sufficiently soft for a knife to cut well into it. 
The pink limestones and calcareous slates in contact with the crystalline 
series at Change arc, I appiehend, identical with the pink limestones and slates 
seen at Hango; but I feel some difficulty at present in giving a name to them. 
They are above the Silurian slates (ovej-lapping them and resting on the 
crystallines at Cliango), and are overlaid by the dark Lilang limestones at the 
Hangrang pass and Hango. They apjiear to occur again, as wdll be mentioned 
further on, in the same order, between Losai and the Kanzam pass. I think 
they answer best to the Muth middle beds, wdiich Dr. Stoliezka correlated 
with the Blaini limestone of the Simla area (Memoirs, vol. V, j), 141), and 
in coloring the accompanying map, I have jjrovisionally classed them as Muth 
middle beds. Very often both the weathered and fractured surfaces of the jiale 
blue and pink limestones reminded me of the Blaini limestone of the Simla area 
I considered it right to note (page 59) that I saw at Hango what had the 
resemblance of a triassic fossil, but unless and until other triassic fossils are found 
in the pink limestone beds, I do not think it would be safe to attach importance 
to the circumstance. 
Proceeding onwards towards Huling, the road leads over what apjiears to be 
a continuation of the same series for a short distance, when these rocks are 
suddenly cut off, apparently by a fault with no great throw ; the road, which 
follow’S the line of strike, passing suddenly from white quartzites to silky slates 
containing some beds of very pale blue limestones (both weathering reddish- 
