uf Edmhiirgh, Session 1883—84. 
793 
Eev. Mr Watson) contain Arctic shells, sometimes in a broken or 
crushed state. This fossiliferous stratum is covered by a great thick- 
ness, of what Mr Watson calls hmlder clay, but which Messrs Bryce 
and Croskey call upper drift beds. The upper stuff also contains 
broken shells {Jamieson in paper published in Proceedings of London 
Geological Society of February 1866, p. 276). 
Bute Island . — East coast, north of Bothesay, examined, and a list 
of boulders found there given. They consist chiefly of schists lying 
on Old Pted Sandstone and clay slate rocks, — and must have 
come from the hills to the north {^Seventh Report, p. 14). 
Along west coast, north of Ettrick Bay, there are numerous 
boulders, also of schists, which show by their positions that they also 
came from north. Several of these boulders are standing on end 
leaning against rocks on their east sides (^Seventh Report, p. 16) 
{Lithograph No. 12, Plate YIII.). 
Barone Hill, situated about 3 miles S. W. of Rothesay, at a height 
above the sea of about 500 feet, has at its west end a rocky gorge 
with remarkable striae on sides, which indicate passage through 
gorge of a powerful current of some kind, hurrying through it 
from a northerly point, stones and rubbish. A diagram given of 
some of the striae, showing that they have been incised more deeply 
at north ends than elsewhere, in consequence probably of the 
pebbles becoming blunted by friction by being squeezed against the 
rock. 
This spot is referred to in a paper “ On Glacial Drift in Scotland,” 
by Professor Geikie, who gives it as his opinion that “ the abrasion 
(of these Barone Hill rocks) has been done by an agent, which came up 
the steep northern face of that eminence, went right over its summit, 
and pursued its course down into the next valley beyond. The 
striations (the Professor adds) run from N. 15° W. to N. 20° E.” 
{Seventh Report, p. 20) {Lithograph No. 13, Plate VIII.). 
Caithness. 
Dunnet . — Conglomerate boulder of small size, appaj.’ently from 
Maiden Pap Hill, 30 miles to south. Several large boulders in 
parishes of Olrich and Cannesby {First Report, p. 29). 
Thurso . — Near Castletown, large granite boulder. Between Wey- 
3 F 
VOL. XII. 
