828 
Proceedings of the Royal Society 
Gluoy the direction of the striae at a height of 800 or 900 feet 
above the sea is from W. 20° N. to W. 40° N. ; and as the 
western sides of the rocks were most worn, the action had come from 
that side” {Lond, Geol. Soc. Journ.^ 21st January 1863, p. 246). 
In Glen Eoy (at about 1200 feet above the sea) he found, much 
to his surprise, that “ ice had come from the S. W. up the glen^ and 
had gone out in a wide stream, towards the wide valley of the 
Spey,” viz., eastward. 
11. Black Mount district, near Rannoch. — Boulders of a peculiar 
white granite, found by Professor Heddle, forming a trainee. He 
investigated from what hills they came, and traced them to Alban- 
nach Hill, reaching to a height of 3425 feet above the sea, and 
situated about 10 miles H.W. from Loch Tulla. 
Keference is made by the Professor to an enormous boulder 
weighing about 1900 tons, in a narrow part of a valley at Loch 
Dochart, where traces were seen of some very “powerful agent” 
which had passed through the valley eastward. 
12. In the Fourth Boulder Report (p. 14) an account is given of 
the Fassnacloich boulders, a species of black granite. Specimens 
were sent to Mr Judd of London, on account of his personal know- 
ledge of rocks in the West Highlands. His opinion was that the 
rock of the boulder was identical with rocks in Mull and Ardna- 
murchan, from which district, therefore, he supposed the boulders 
may probably have been transported. 
On the shore of the Linnhe Loch, at Appin, there are two huge 
well-rounded boulders of the same kind of granite. Their position 
favours Mr Judd’s suggestion, that all these boulders had been 
transported from the westward. 
The granite boulders on the top of Craig Dim, already men- 
tioned in Lochaber, are of a dark colour. Is it possible that the 
mountains of Mull and Ardnamurchan could have supplied all these 
boulders when the sea stood 2000 feet or more above its present 
level ? {Fourth Report, p. 45). 
12J. Ardgour district, on north side of Linnhe Loch . — Professor 
Heddle of St Andrews, in Seventh Report, p. 36, states that on 
Stoh Ghoire a Chearchaill he found a trainee of boulders lying along 
the ridge for nearly a mile, at heights varying from 2400 to 1800 
feet above the sea. The direction of the trainee was H.H.W. 
Most of these boulders consisted of syenite, with red felspar crystals 
