of Edinburgh, Session 1883-84. 
829 
and green hornblende. Thinking that these boulders might also be 
found on the south side of the Linnhe Loch, he crossed, and on two 
hills there, viz., Bein Blian, at a height of 1500 feet, and on Beinn 
na Gucaig, at a height of 2017 feet, he found boulders of the same 
syenite as he had found on the north side of the loch. 
In the Eighth Report (p. 33) Professor Heddle mentions his dis- 
covery of more boulders of the same peculiar syenite, as seen by him 
on hills nearer Ben Nevis and on Ben Nevis itself, at an altitude of 
2200 feet. This discovery led him to change his opinion as to the 
direction of the transport of these boulders. 
13. Loch Creran. — The boulders there were examined by Professor 
Heddle. He was much puzzled to explain from what district they 
came. There were strise on the rocks of the hills adjoining, at 
heights exceeding 2000 feet above the sea. He was inclined to 
think that the boulders had crossed the Linnhe Loch from Loch 
Sunart and Glen Tarbert. 
On some of the hills of this district boulders were discovered 
at heights exceeding 2000 feet, which Professor Heddle was satis- 
fied must have crossed valleys to reach their positions, and by means 
of floating ice {Sixth Report, p. 43). 
14. Glencoe District. — On the western slopes of a hill, in the higher 
part of Glencoe, near Loch Tulla, boulders of a peculiar white 
granite were found by Professor Heddle. They were different from 
the adjoining rocks. He already knew that the rocks in the hills 
to the eastward were also different; so, in expectation of finding 
the parent rocks, a search towards the west was commenced. On 
reaching the Aonach-Eagach range of hills the same kind of 
boulders were seen, fewer in number, but larger in size. They were 
lying chiefly on the eastern side of the narrow ridge leading up to 
the summit of the nameless peak marked 2938 feet on the Ordnance 
map. On the next rounded haunch (2880 feet) they were not seen, 
but they reappeared on the ridge as it ascended to the eastern peak 
of Meal Dearg (3090 feet), and almost up to the summit of the 
western peak (3118 feet). “ Their position,” adds Professor Heddle, 
was most peculiar. They lay on a ridge not many times wider 
than their own hulh, and only on the eastern slopes of that ridge ; 
while on the lower hills, where they were first seen, the same boulder 
lay on the west slopes” {Sixth Report, p. 44). “It is a fact of con- 
siderable importance, bearing on any theory of transport, that these 
