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Proceedings of the Royal Society 
port from tlie S. or S.W. as the most probable quarter, though the 
N.W. was not impossible. 
Most of the small hills in this neighbourhood are hare on the 
N.W., and are smoothed on that side only. 
(4.) The Convener paid a visit to a glen called Glenlonnan, the 
mouth of which comes down to Loch Etive near Taynuilt. He 
had been told of there being several large boulders on a hill called 
Bein Glas in that glen, about 1700 feet high. This is the glen 
referred to in the last Beport of the Committee, page 12 and sec- 
tion 5. He was guided to these boulders by Mr Clerk, a son of the 
tenant of the farm of Duntonichan, of which Bein Glas forms part. 
In ascending the north flank of the hill, it was observed that the 
smoothed rocks here as elsewhere distinctly sloped down towards 
the N.W., and that rounded boulders were often on these rocks. 
The rock of the hill was gneiss, and most of the boulders were also 
gneiss ; but there were also some of granite, a few of mica slate, 
and a very small one of quartzite. The largest granite boulder 
passed measured 6| x 4 x 3 feet. The longer axis pointed H.H.W. 
The rocky surface on which it rested dipped due north. 
When a height of 1619 feet was reached, which was near the 
top of the hill, it created some surprise to find that there were 
smoothed rocks facing the south , besides others facing the 
north. 
Several large boulders were found occupying positions on slopes 
facing the south. One of these was a well-rounded grey granite, at a 
height of 1573 feet. 
At a height of 1637 feet there was a boulder, 8x5x5 feet, very 
angular. It was a dark purple claystone, in appearance similar to 
the boulder, shortly above mentioned, seen at Lailt. It was resting 
on a shelf of gravel, but the general slope of the hill was exceedingly 
steep, viz., forming an angle of about 35°, sloping down S.E. 
Judging by the position of these boulders, and the steepness of 
the hillside facing the S.E. or the S.S.E. which they occupied, the 
presumption is, that they had come from that direction. The rocks 
of the hill at this spot are also smoothed in that direction. Towards 
the south there are high mountains in the distance. 
Another grey granite boulder, 3x3x2 feet, was found at a height 
of 1645 feet on a rocky slope, less steep, but still facing the south. 
