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Proceedings of the Royal Society 
boulders on Aonach-Eagach occupy positions much higher in level 
than any of the hills in a very ivide extent of country, so tliat it is 
difficult, if not impossible, to adopt for them the explanation of any 
local glacier ” {Sixth Report, p. 46). 
In the following year. Professor Heddle returned to the Rannoch 
district, to search for any farther traces of this stream of white granite 
boulders. To the S.E. of Loch Rannoch he found two hills, Gea 
Qharn and Greag Mhor (2595 and 2250 feet), forming a sort of 
ridge running nearly N. and S., and so situated as to cross what 
might have been the line of stream. Two boulders found, each 
weighing about 7 tons, very similar in colour and composition to 
Loch Tulla boulders. He next proceeded to Schehallion, situated 
about 3 miles farther east, and found on its western slope, about 140 
feet below the summit, i.e., 3407 feet above the sea, a boulder of 
the Loch Tulla group, about three-quarters of a ton in weight. 
Reference is made to other geologists who had previously found 
boulders on Schehallion, near its top — one being Robert Chambers, 
who concluded from the striations on the rocks of Schehallion, that 
the stream which brought the boulders had flowed from W. 30° H. 
{Seventh Boulder Report, p. 34). 
Convener passed through Glencoe Valley thrice, the last time on 
foot, beginning near the upper end. He was impressed with the 
belief from what he saw, that ice had passed down the glen, 
smoothing the rocks along bottom, and so far up each of the sides, — 
and carrying blocks of these rocks for some distance down the 
valley. On the other hand, it appeared to him that blocks of 
rocks foreign to the valley had come up the valley at a subsequent 
period, — brought therefore, by the action of floating ice. One of these, 
a huge mass of Conglomerate, was resting on a terrace of gravel ; 
and above the gravel there were, on the hillsides adjoining, “extensive 
beds of sand” reaching to heights exceeding 2000 feet above the sea. 
Besides this Conglomerate boulder, there were granite boulders in such 
positions as to show that they also had come up the glen. The Con- 
vener concluded that the glen had first been occupied by a glacier; and 
that at a later period the land sank to more than 2000 feet below its 
present level, which would allow floating ice to pass over the Glencoe 
Hills, and to deposit on them some of the boulders they might be 
carrying {Fifth Report, pp. 52, 53) {Lithograph No. 33, Plate X.). 
15. Kilmallie. — One boulder, 12 x 10 feet, fully 2000 feet above 
