of Edinburgh, Session 1881-82. 
775 
amianthus.* We afterwards found a similar rock (but far from 
identical) 3 miles N.E., near limestone, overhanging Glen 
Nevis. 
(3) On following day, went up to Mullach nan Coirean (3077 
feet). It forms a great round dome, all of red granite, tending to 
porphyry. On its summit there are several small angular blocks of 
pure white quartz rock, the nearest locality of which is the peak of 
Stob Bhan ; others had been built into the cairn. 
The ridge from this hill to Stob Bhan (3274) is one of exceeding 
interest. It is narrow, falling and rising five times, forming so many 
little hills. 
In the second of the depressions, at an altitude of 2904 feet, the 
rock is of red syenitic granite, apparently the same as that of the 
boulders before mentioned on Ben-a-Gucaig and Ben Bhan, and also 
as forming a trainee on Stob Coire Chearchaill. 
We afterwards found the same rock in abundance near the great 
precipice of Ben Nevis, at an altitude of 2200 feet.f 
At another part of the ridge, the ground falls from 3004 feet to 
2904 feet; and there “for about 100 yards, the ridge consisted of a 
bank of loose material.” Whether a glacier, which had been pouring 
through, or rather sending a delta-branch through the hollow, 
showered down the heaps of stones which form the ridge, or whether 
it had been deposited by aqueous agency, may be matter of opinion. 
By going down the S. slope, and by peering over the precipices of 
the next height, so as to see the N. slope, we inferred that this bank 
was about 40 feet deep. It was quite “like the patch on the N.E. 
top of Meall nan Cleireach ; only, in addition to angular blocks, 
it contained much gravel and small rounded stones.” Its ridge 
was broad enough for three persons to walk abreast. The heap is 
made up of many kinds of rock, — micaceous gneiss, Livingston rock, 
and quartzite being common. “ I hope I have made it clear that 
the forementioned bank is the connecting ridge between the 3004 
feet hill and the next hill (2995 feet). This last mentioned hill 
* I found no other grey granite boulder on the S.W. of Nevis, though 
many on the N.E. The amianthus boulder may fairly be referred to the lime 
locality near Glen Nevis. 
t This discovery of a rock in situ , identically the same as the rock composing 
boulders seen on Stob Coire a’ Chearchaill, alters the opinion I had formed 
last year as to the direction from which these boulders had come. 
