668 
Proceedings of the Uoyal Society 
at a place called “ Brae Leckanf 7 miles west of Inveraray, well 
covered with angular boulders. The boulders were of the same 
nature as the rocks of the hill — a dark grey porphyry. But the 
boulders had evidently been transported to the hill from some other 
place, there being no cliff from which they could have fallen. 
The Duke thought they had been floated from the eastward, and in 
that direction certainly the land was lower than in any other 
direction. But the Convener observed that towards the west there 
was an opening among the hills low enough and wide enough for 
a current to have flowed to and over the hill on which the boulders 
rested. 
8. A few miles to the north of Inveraray there are some huge 
boulders of a coarse conglomerate, quite distinct from any of the 
rocks in the immediate neighbourhood. The rock of these boulders 
is a greenish or grey coloured Silurian rock full of quartz pebbles. 
One of these conglomerate boulders, weighing about 60 tons, is on 
flat ground about 800 feet above the sea, and resting on gravel. 
Another, 10 x 9J x 7\ feet (weighing about 48 tons), is on the 
left bank of the River Arey, and about 180 feet above the sea. 
The gamekeeper, who pointed out these boulders, said that there 
was no rock of the kind composing them, except at a place about 6 
miles due west. Between that spot and the sites of the boulders 
there were several ranges of hills and valleys. 
When the subject was mentioned to the Duke of Argyll, he corro- 
borated the gamekeeper’s statement. He informed the Convener, 
that there is conglomerate rock, of the same character as that of 
the boulders, on the summit or ridge between Loch Awe and 
Loch Fine, which lies to the north-west of the boulders. 
On the tops of several of the hills to the north-west of Inveraray, 
about 700 feet above the sea, boulders were noticed where it was 
manifest, from their peculiar position, that they could have got into 
it only by coming from the west. Sketches of these were taken. 
9. Oban and Neighbourhood. — (1.) At Dunolly, close to the sea 
shore, there is a grey granite boulder 12x8x6 feet. It is about 
20 feet above high water, and rests on an old sea beach. Its * 
longer diameter points W. by N. 
The nearest rocks of grey granite are in Loch Etive, situated to 
the eastward. There are ranges of hills between Loch Etive and the 
