of Edinhurgli, Session 1 883 - 84 , 
917 
On several occasions subsequently, I examined tbe banks and 
boulders, occupying tbe district on the east side of the Eiver 
Spean, and situated to the north of the spot on the Ordnance Map 
called Rough Burn^ (See B on the Sketch Map, Plate XL)* 
I found several, and especially two remarkable kaims, running 
in a somewhat different direction from those on the west side 
of the valley, viz., towards south, and curving like the rest, — 
with the inner curve facing the west. I walked along the top 
of the two highest kaiihs. Their sides were steep, and reached in 
some spots to a height of 30 to 40 feet, with many boulders on 
them. 
These kaims occupy portions of the hill, which slopes up towards 
the north, from about 1100 to 1245 feet above sea-level. 
Standing on these kaims, I could descry Loch Treig, which by 
compass bears from them about S.S.W. The level of the loch is 
represented in the Ordnance Map as 784 feet above sea-level. 
Some of the boulders, on the level ground in several parts of 
the valley, form trainees, more or less parallel with the lines of the 
kaims. 
The following are the dimensions of some of the bdulders on the 
east side of the valley : — 
One measured in girth 19 paces, and in height 5 feeL 
Another measured 12 x 3x2 feet, with longer axis S.W. 
,5 15x10x4 feet, „ „ 
It is proper to add, that shelf lY., before referred to as the beach 
line of the lowest lake, is visibly impressed on the gravel banks, 
on both sides of the valley ; and they are so indicated on the 
Ordnance Map. 
These kaims, therefore, belong to a period in history more 
ancient than the Lochaber lakes. 
Theory, 
With regard to the origin of these banks and boulders, there can 
be little or no doubt that the materials of the banks, consisting 
chiefly of well-rounded pebbles and blocks, and in some cases of 
sand, in beds partially stratified, must be due, in some way, to the 
agency of water, with deep and powerful currents. 
