640 D, MILNE HOME ON THE PARALLEL ROADS OF LOCHABER; 
a huge granite boulder some 60 feet round and 12 feet high at a height of more> 
than 1800 feet above the sea. 
Professor Nicot of Aberdeen says :— 
“JT found huge blocks of black granite and smaller masses of red porphyry within a few 
yards of the summit of Craig Dhu, a conical mountain of mica slate. One block must weigh 
40 tons. They are evidently ice-born masses, probably floated from far in the west.” (“ Lond, 
Geol. Soc. Jour.”, August 1869, p. 283, 
Sir JoHN Ramspen of Ardverikie informs me, that he has seen granite 
boulders on the tops of two contiguous hills, called Ben Sguth and Gealcharn, 
the latter exceeding 3000 feet above the sea. They are situated to the north 
of Loch Laggan. . 
The Ordnance Surveyors, when examining the Stratherrick Hills, noticed 
that the largest boulders were often on elevated sites. In a Report by Captain 
White to the Royal Society Boulder Committee, it is stated that the highest 
hills in that district are about 2900 feet above the sea, and that large boulders 
were most abundant above a level of 2250 feet. (‘‘ Roy. Society Proc.,” 2d June 
1873, pages 141 and 157.) . 
(2.) The following facts indicate the peculiar position of boulders. 
On the west side of Bohuntine Hill there are numbers of gneiss boulders, at 
from 800 to 1100 feet above the sea, Those whose length is greater than their 
width, generally lie east and west, their smooth end, which is also the narrowest, 
being towards west. They probably came from the west, as the lowest ground 
bears from the boulders west 4 south. 
Mr Darwin takes special notice of the circumstance that the Ben Erin Hills 
of gneiss (1600 feet above the sea), on which he saw numbers of granite 
boulders, are completely isolated by deep valleys on each side of them, leading 
to the conclusion that the boulders must have been transported to their sites by 
“ floating ice.” It struck him that the boulders were “ most frequently on the 
summits of little peaks—such as Meal Dherry,” from the numerous cases of 
that kind which he observed. 
At the head of Glen Glaster, on the N.E. part, there is a sort of amphi- 
theatre from 1000 to 1200 feet above the sea, on which there are gathered a 
large number of gigantic grey granite boulders mostly angular. One is 
18 x 12 x 44 feet. Another is 12 or 13 feet wide, 9 feet high, and 23 paces 
in girth. These blocks are not near any rocks, craggs, or hills, from which 
they could have fallen. They appear to have been somehow transported to 
their present position. The lowest ground, and the widest opening, by which 
they could reach it, bears from it W. by 8. and W.S.W., the direction of Fort- 
William. It appeared to me, that the most probable explanation was, that ice 
had floated to this spot, which, surrounded by hills, except towards the west, 

