144 
Proceedings of the Royal Society 
Sir James Matheson, of a sandstone boulder near the brickwork at 
Garabost, unlike any rock at present known in tbe Lewis ; and he 
pointed out to the Convener some building stones brought from 
Loch Broom on the coast of Wester Boss, which he thought exactly 
resembled the rock composing the boulder. 
As the occurrence of this sandstone boulder at Garabost is of 
importance, by its bearing on the question of transport, the Con- 
vener made a special inspection of it. 
The Convener, having been introduced by Mr Caunter to 
M‘Fadzyen, the manager of the brickwork, was taken by the latter 
to the boulder, and was informed by him that some years ago it 
had been partially blasted with gunpowder for building purposes. 
It had originally weighed about 8 or 9 tons, but the lower half still 
remained, showing its shape and position. The boulder was a coarse 
brown sandstone, full of quartz pebbles about the size of a small 
pea. 
The boulder was on the side of a hill sloping towards the sea, on 
the 1ST. W. side of the Eye peninsula, and facing the west. It was 
buried in a bed of gravelly clay, which had all the appearance of 
being a marine deposit, and it was within a mile’s distance from 
Garabost brickwork. The height of the boulder above the sea was 
about 50 feet, and its distance from the sea about a quarter of a 
mile. 
The Convener found on the surface of the same hill, sloping to 
the west, another sandstone boulder about the size of a man’s head, 
exactly similar in composition. 
The hill on the side of which these boulders were lying, rises up 
gently towards the S.E. to a height of about 160 feet above the sea. 
How it appears, from what Mr Caunter stated, that no sandstone 
rock, exactly similar to that of these boulders, had been seen in the 
Lewis ; but, on the other hand, the geological formation or class of 
rocks to which these sandstone boulders belong, does exist in the 
Lewis. Dr Macculloch, in his geological map of the West High- 
lands, indicates, by its appropriate colour, this formation as occurring 
for many miles on the east coast of the island, near Stornoway. 
The Convener had pointed out to him by Mr Caunter a long range 
of high cliffs along the shore, to the north and south of Stornoway, 
of a sandstone breccia or conglomerate, identical in composition with 
