774 
Proceedings of the Royal Society 
Gleireach (1626 feet). Found near Corunanan House several small 
boulders of the same syenitic granite, which I found last year in a 
trainee on the top ridge of Stob Choir e a Chearchaill on the north 
side of Linnhe Loch ( Seventh Boidder Report, p. 36), and on Bein 
Bhan on the south side of the loch. The felspar was not so red in 
these boulders ; no other difference. 
Found on south spur of Meall nan Cleireach a boulder, 4x6x4 
feet, of a peculiar rock, which I learned afterwards had attracted 
much attention from Mr. Livingston and Professor Duns. The 
material of the boulder looks like a very vitreous hyaline quartz 
rock — the grains running into each other. The large amount 
of felspar in it, has cemented the grains of quartz. Many 
examples of this boulder were afterwards discovered. The parent 
rock I have never met with. I named it, for identification, after 
Mr. Livingston. 
The ridge between Bein na Gucaig (2017 feet) and Meall nan 
Cleireach (1626 feet) consists of an igneous dyke, and is sprinkled 
with very small boulders, (1) of the red binary granite (felspar 
and quartz, almost a porphyry) of the hill Mullach nan Coirean 
(3077 feet) lying nearly due E., (2) of the above mentioned 
syenitic granite, (3) of the Livingston rock, (4) of a fine grained 
diorite, not found in situ by any of us, and (5) two small boulders 
of quartzite. 
The top of Meall na Cleireach I found “intensely interesting.” 
Three boulders lay on its N.W. side about 20 feet below summit. 
They lie about 50 feet above the three which are mentioned in Mr. 
Livingston’s notes as forming the points of a triangle. The hill 
showed bare clay slate rocks on its W. side. Every other part had a 
thin cover of turf over it, and for about 50 feet down ; from which 
point to the summit, but only on the N’.E. side, there was a deep 
deposit of angular masses of rock, tossed in confusion as if rolled 
from off a glacier. They were thinly covered over with turf ; but on 
clearing the turf off, the boulders were found to consist of micaceous 
gneiss and red granite. 
On descending the hill towards the stream, and about 400 feet 
above it, 1 “ came on a clump of three boulders.” Two of these are 
of interest ; one 13x4x4 feet being of grey granite with a little red 
felspar ; — the other 5x3x2 feet, a mass of matted fibres of 
