808 
Proceedings of the Royal Society 
of Mull. “ One of the boulders lies on the very top of Spyon More. 
Another is met with half-way down the hill. The rocks at the 
summit, are well glaciated ; and a great heap of moraine-like debris 
rests on it” (Ninth Report, p. 27). 
4. Iona. — On east coast of island a granite boulder 24 x 18 x 6 
feet, weighing about 190 tons. Longer axis N.W. There are 
many boulders on E.S.E. side of island, opposite to Ross of Mull, 
which have led some persons to suggest that these may have been 
transported across the narrow arm of the sea which divides Mull 
from Iona. But the Duke of Argyll is quoted as thinking that the 
Iona granite boulders are a different variety (First Report, p. 27). 
In Ross of Mull two varieties of granite (red and grey) extensively 
quarried (Second Report, p. 157). 
About half a mile north of the large boulder above specified, there 
is another large red granite boulder about 12 feet square. East end 
rests on clay slate rocks of Iona. There is a groove (which was 
seen by Convener) on under surface of boulder, running N.E., 
indicating that it had been pushed in or from that direction (Second 
Report, p. 157). 
To IST.E. of Cathedral, along the shore, hundreds of granite 
boulders (chiefly the red variety) ; — several exceeding 20 tons. 
The rocks of Iona are chiefly clay slate. Convener saw no other, 
and he was told there are no granite rocks. 
At the south end of the island, many granite boulders (mostly 
red, but some also of grey variety) lying on high ground from 200 
to 300 feet above sea. One of these seen by Convener, standing 
upon end, leaning against a rock on its S.W. side, as if it had come 
from a hl.E. direction (Lithograph No. 15, Plate VIII.). 
Most of the bouldg^i’s in south end of Iona lie with longer axis 
N.E. and E.KE. 
Convener heard of a large boulder on west side of island in two 
fragments, which to his informant had suggested the idea of the 
boulder having been broken by falling from a height (Second Report, 
p. 155). 
The highest hill on island is called “ Dun J.” On the hr.hf.W. 
side of this hill there is a plateau at height of 230 feet above sea. 
On the plateau, where it joins the hill, there is a large red granite 
boulder, weighing about 400 tons, cubical in shape, and very 
