208 
Proceedings of the Boy at Society 
Near Meall Buie, situated about 2 miles S.W. of Schallasaig, a 
great pit has been opened for gravel and sand. In this pit, a number 
of boulders occur, the largest about 4 feet long. Two of these have 
striae or ruts on their surface, parallel with longer axis. Though 
many are apparently of Schallasaig granite, there are others, which 
were not recognised as the same as any rocks on the island. 
Some basaltic or whinstone dykes occur on the east coast, a little 
south of Schallasaig ; and boulders of these occur to the west. 
At the foot of Dungallon hill (on S.W. coast) there is a sand 
pit, with a considerable number of boulders, from 1 to 2 feet long, 
apparently water-rolled. The height above the sea is from 40 to 50 
feet. 
On the south side of Dungallon, there is Port Loth, where several 
boulders (about 2x2x1 feet) of grey granite occur. In a gully in 
the rocks on N.E. side there is a grey granite boulder, 4 x 2 J x 2J, 
and one of trap, 4 x 3 x 2 J feet, well smoothed. To the north there 
are more, all apparently the same as Schallasaig ; but besides them, 
there are some granites of a yellowish-red colour, different from any 
roclcs seen. 
In the N.W. part of Skipness the hills are rounded and smoothed, 
but no boulders were seen on them.* 
3. Shingle Beaches. 
Along the shores of both islands, and even on inland spots, especi- 
ally in Colonsay, there are extensive collections of pebbles and small 
boulders, all evidently water worn, — some of them reaching to a 
height of 70 feet above the present shore. The pebbles and boulders 
* Note hy Convener . — With reference to the granite boulders, which in most 
cases Mr Murray seems inclined to connect with the Schallasaig granite rocks, it 
should be kept in view that at Killoran (in the N.W. of Colonsay) there are, 
as Mr Murray states, “rocks of both red granite and grey granite, which rise in 
masses to the height of 200 feet. The grey is found as far east as Ballinahard. 
At the same place there is an exposure of a third granite, of a dark colour, re- 
sembling syenite. In the same neighbourhood the schist is much contorted 
and burnt ; and at its junction with the granite there is a vein of quartz rock 
or quartzite.” 
Professor Geikie, in his memoir on the “Geology of Colonsaj^,” already 
qvioted confirms Mr Murray’s statement, when he refers to “a crystalline rock 
which appears to be of igneous origin, a syenite consisting of pink felspar and 
dark green hornblende. It occurs near Skipness, in the north of Colonsay, in 
wdiich district, the schistose and gneissose strata are much broken and confused.” 
