926 
Proceedings of the Royal Society 
Loch Treig bears W-S-W, from the rock ; whilst lower part of 
Spean valley bears N.W. by W. from the rock. 
If boulder came from Loch Treig it would not have been inter- 
cepted by the rock, but have passed on to left, viz., in a ^.E. 
direction. 
If boulder came up Spean valley it might have been, and most 
probably would be, obstructed in its farther progress by the rock. 
(2) . Boulder A rests by one of its corners C on boulder B. A 
line drawn through centre of A and corner C points S.E. by S., 
implying transport from N.W. by N. If boulder A had come from 
Loch Treig it could not have stuck on boulder B,. but have fallen 
off to one side. 
(3) . Two boulders resting on north side of a gravel bank in Spean 
valley. If these boulders had come from Loch Treig they pro- 
bably could not have stuck there. 
(4) . Two large boulders in Spean valley, situated S.E. of Loch 
Treig. Boulder A leans against boulder B in such a way as to 
show that it came from the north, and not from Loch Treig. More- 
over, a hill on south side of mouth of Loch Treig is so high that it 
would have prevented these boulders reaching positions they occupy. 
(5) and (6). Boulders at north side of a gravel bank in Spean 
valley. 
Plate XIII. 
(1) . Is intended to represent a small portion of two kaims with 
boulders on their sides, facing the north. The most northern shows 
an interruption at A, as if it had been broken through by some 
agent from the north. 
(2) . Eepresents a hill near Borve (in sloping down to the 
sea-shore, covered with boulders, apparently brought from a sea- ward 
direction, viz., the west. 
(3) . Is one of many boulders on Borve Hill, resting on the rocks 
in such a way as to show transport from a westerly point. 
