of Edinburgh^ Session 1878 - 79 . 117 
the island and very close upon the sea. Its highest point is about 
290 feet above the sea. 
At the foot of this hill there is another low hill, called Bein 
Meanach, above 80 feet above the sea. Big. 2 gives a sketch of both 
hills. Ben Hock has two boulders on its top, the smaller one, A, 
260 feet, the larger one, B, 270 feet above the sea. Enlarged views 
of these are given in figs. 3 and 4, to show their size and position, 
and the fact (which Mr Fraser thought curious) that each rests on 
three smaller boulders. A rests on a rock surface sloping down 
N.W. at an angle of 16°. The rock on which B rests is nearly 
flat. 
The boulder C on Meanach has nothing peculiar about it, except 
for size — it being 16x20x13 feet. 
These boulders are a coarse granite, which, however, in some 
parts passes into a dark- coloured gneiss. The rock of the hill is 
also gneiss ; but they are all veritable erratics, and must have come 
from some region in the N.W. 
2. Mr Fraser next guided the Convener to a spot situated about 
half-a-mile to the east of Ben Hock, at Grassipol, that he might 
look at what he (Mr Fraser) considered to be an immense accumu- 
lation of boulders. 
The Convener, on viewing the place from a distance, thought that 
the blocks might be only fragments from a cliff adjoining, and not 
erratics ; but, on going to the spot, he found they were boulders, 
and in positions of much interest. They were lying in many 
cases over one another on a flat meadow, and formed an elongated 
heap, more or less parallel with the line of a hill distant thirty or 
forty yards from them to the S.E. The meadow extended N.E. 
and S.W. about 350 to 400 yards, and towards the. N.W. about 200 
yards — viz., in width. The height of the meadow above the sea 
was about 80 feet. The sea was situated to the N.W., and dis- 
tant about three-quarters of a mile. The height of the hill above 
the meadow on the S.E. was about 80 feet. A few boulders were 
lying scattered on the slope of this hill facing the N.W. It was 
manifest that the great accumulation of boulders on the meadow 
along the base of the hill could be best explained by supposing 
that the boulders had all come from the N.W., and had been 
stopped by the hill in an easterly movement. One of the boulders 
