762 
Proceedings of the Royal Society 
The granites here are of various kinds, and frequently form 
boulders of great size. Some hear a close resemblance to the light 
red-coloured granite of Aberiachan, near Loch Ness. 
Several of the heaps have a covering of peat. They lie in the 
course of a long line of single boulders referred to below. 
Some large blocks are met with in association with many much 
smaller. Thus opposite to Lochy Bridge, at a height of 1500 feet, 
there is a porphyry boulder 7x6x5 feet. The rest of the heap 
is made up of small granite blocks. 
Not far from this heap, there are several boulders lying in line 
to the N.W. * * * * 
Boulders which occur singly. 
Near the old military road between Fort William and Stirling 
which leaves the drove road at the S.W. end of the former, 
there is a large boulder near the top of a hill, about 400 feet 
above the sea, and looking down on Loch Linnhe. Standing by 
this great stone, and looking to the N.E. in the direction of “ Meall 
an f Suidhef one sees a series of boulders in line in the same 
direction, though the line is not so well marked as in some other 
cases. The boulder is a coarse grey granite, that next to it in the 
line is a fine felstone. Two others are quartzites, the rest are 
mainly of the rock of the hill, — mica schist — much rubbed and 
rounded. On the east of the road again, is a boulder of a fine- 
grained pinkish granite, with a close resemblance to the Aberiachan 
granite. * * * * 
Coming now to the area lying N. of the Liver Nevis, including 
both low grounds and mountain slopes, granite, granitic porphyry, 
and porphyry blocks lie for the most part in a line of their own, 
while schists, micaceous gneiss, and some porphyrites, lie in either 
side of them. 
The mica schists are nearest to the mountain ; the granites and 
porphyries next, and the others lie between them and the River Nevis. 
The line is a diagonal of the area referred to, running in a N.W. 
direction. 
Looking from near Claggan Cottage along the steep slopes of 
Meall an f Suidlie, granite boulders are seen lying on the mica 
schist rocks, where the side of the mountain slopes down so steeply 
as to make it a puzzle to understand how they can remain in position. 
