669 
of Edinburgh, Session 1877-78. 
site of the boulder. Moreover, the boulder is close to the foot 
of a high rocky cliff, which being on the east side of the boulder, 
must have prevented the boulder reaching its site, except by trans- 
port from the westward, — probably the north-west, as the island 
of Kerrera is situated to the west and south-west, and would pre- 
vent the boulder coming from that direction. 
The Convener was accompanied by a gentleman resident in the 
neighbourhood (Mr Clerk), well acquainted with the Loch Etive 
granite, who expressed doubts whether the granite of this boulder 
was of a similar composition. 
(2.) The north part of Kerrera Island is strewed with numerous 
grey granite boulders, all well rounded. Most of them are on the 
beach, and on the old terraces adjoining the beach. There are some 
also, on Baltimore Earm, at heights of from 357 to 437 feet above the 
sea, on short terraces or flats of detritus facing the east and north-east. 
In these cases there would be less obstruction to a transport from 
Loch Etive than in the case of the Dunolly boulder, but the range 
of hills near Glenlonan, reaching heights of from 500 to 1500 feet, 
still presents a difficulty. 
If the Dunolly boulder came from a northern source, the Kerrera 
boulders probably came from the same quarter. 
(3.) On the hills to the east and north-east of Oban, there are 
numerous boulders, chiefly of granite, whose position does not 
suggest one direction more than any other. 
The rocks of these hills being clay slate, the boulders on them 
must have been transported from some distant quarter. 
The granite is grey of different varieties, and very like the Loch 
Etive granite. But there are others, with large crystals of quartz 
and felspar, which betoken some other source. 
One of this kind is on a hill to the south of the old public road 
between Oban and Loch Etive, at a height of 530 feet above the 
sea. It is extremely angular, and rests on a bare rock of the hill. 
This position would most easily have been obtained by floating ice. 
Besides these granite boulders there are some of dark porphyry 
and of quartzite, which most probably come from the north. 
This conclusion is somewhat strengthened by the circumstance 
that in this district, where the rocks are smoothed and striated, the 
surface of the rocks slopes down towards and faces the north, and 
VOL. IX. 4 T 
