of Edinburgh, Session 1879 - 80 . 585 
and remarkable cessation of boulders. This absence of boulders 
continues west of Tyndrum till about 2 or 3 miles east of Dal- 
mally, when they again begin to make their appearance, and they 
are very numerous on the hills there facing the N.W. 
May the reason of this be, that at or near Tyndrum there is the 
valley (traversed by the high road) running in a N’.N’.W. direction 
between high mountains, passing through Glencoe, whilst near 
Dalmally there is a similar opening towards the sea by Loch Awe 
and Loch Etive. When the sea stood at say 2000 feet above 
its present level, currents may have flowed through both of the 
openings just described, but not over the high ground between 
Dalmally and Tyndrum, the land there being so high that it may 
have prevented a current. It will be remembered that in the 
Committee’s Fifth Eeport facts were stated, which seemed to show 
that in Glencoe a current had passed up the glen carrying boulders 
towards the S.E. 
The current which passed through what is now Loch Etive and 
across Loch Awe, towards the S.S.W., may have continued till the 
sea sank below the level of the hills lying in that quarter. Along 
the banks of Loch Awe there are sea-terraces at a height of at least 
200 feet above the present sea-level ; and in the narrow pass at the 
south end of the loch, near Ford, there are indications of a current 
which flowed through it from the north. 
Whilst on the subject of Loch Awe, I may notice a boulder on 
the south bank of the loch, at a place called Kaim, about 10 miles 
west of Port Sonnachan. The boulder is of mica schist, and is 
24 x 11 x9 feet. Its longer axis is FT.W. by It rests on a 
knoll of gravel which is about 20 feet above the adjoining- 
meadow. This meadow is surrounded by hills (from 400 to 
600 feet in height) on all sides but one, where there is an opening 
due west from the boulder, and by this opening the boulder may 
have entered the cul de sac where it lies, though, if brought when 
the sea was 400 to 600 feet higher than now, it may have come from 
any other direction. 
The hills to the south of this meadow are, on their sides sloping 
down to the north, well-covered by boulders ; and they apparently 
had come from some northerly point. 
Along the south bank of Loch Awe, between Port Sonnachan 
