767 
of Edinburgh, Session 1881 - 82 . 
down, over the col between Achintore Hill (940 feet) and Bein Iiiahhach 
(1300 feet), the watershed between which is from 400 to 450 feet, 
and by an arm of the Glen Nevis glacier through the transverse 
valley of the Riasgaig. Achintore hill has striae N. and S. at 590 
feet. 
Mr. Livingston observes that the lower boulders could hardly have 
come from the westward, as the only opening in that direction is the 
channel of the river Kiachnish .* To have come by it would imply 
their having crossed the supposed ice stream of Glen More, here 
flowing along the bed of the present Loch Linnhe. 
4. Showing that ice has moved in this direction from Glen Nevis, 
we have on a ridge separating that glen from the valley of the 
Riasgaig — a feeder of the Kiachnish — the remarkable boulder called 
Clach a Sgrogcddh or “The tilted Stone” (1790 feet), between 
the summit of Sgor Chalum and Glas Ghreag. This boulder is 
10Jx6Jx 9J, axis W. 10° S. It is of compact mica schist, 
indurated, finely laminated with quartz veins, and contains chlorite 
and ilmenite. The rock on which it rests is of somewhat similar 
material, but differing considerably in structure, containing neither 
of the two latter minerals, which occur in Aonach Beg rock. 
Within a few yards of it, and nearer the Glen Nevis edge of the 
ridge, is another boulder of the same kind of rock, 12x7x5 feet. 
Above these, on the shoulder of Glas Ghreag , at a height of 1930 
feet, striae occur, their direction being N. 20° W., apparently formed 
by an agent passing from Glen Nevis towards the glen of Kiachnish. 
Proceeding further south along the skyline, a small angular perched 
block is seen at an elevation of 2170 feet, with its axis N. 25° E. 
It is quite angular, and might not have been carried far. 
At about the same elevation, on the Kiachnish side of Glas Chreas, 
there are ten blocks all of considerable size, the two largest 7x7x4 
feet, and 7x4x4 feet. They also are angular, and lie on the surface 
of detrital matter. They are open to Glen More and lower Glen Kevis, 
but more probably were brought from upper Glen Nevis by a glacier 
winding round the shoulder of the hill — Glas Chreag — through Glen 
Riasgaig. f 
* This word means “ Stream from a marsh.” 
f Note by Convener . — It is difficult to understand how the supposed glacier 
could wind round the shoulder of the hill here referred to. The position of 
