LAKES IN RELATION TO GEOLOGICAL FEATURES 495 
Droighinn^ an. — Rock-basin in volcanic rocks of Lome plateau. 
Droma. — Ponded by moraines and alluvium^ partly artificial. It is 
situated on the main watershed of the North-West Highlands. In 
this case the ice-shed must have lain far to the east of the present 
watershed, as shown by the distribution of boulders of the well-known 
augen gneiss of Inchbae, which can be traced across to Loch Broom. 
Such watei-sheds have almost invariably had the gradients on each 
side lessened, while many have been hollowed into rock-basins. 
Druim Suardalain. — One of a chain of rock-basins in Lewisian Gneiss, 
along the course of the stream that drains Glen Canisp. 
Druimnean, nan. — Rock-basin along strike of phyllites, partly drift- 
dammed. 
Drumlamford. — Hollow in boulder clay and moraine matter resting on 
Silurian greywackes and shales. 
Drunkie.— Vol. II. Part I. p. 49. 
Duartmore. — ^Small rock-basin in Lewisian Gneiss on the Duartmore river. 
DuBH (Etive basin). — Small shallow pool among moraines on the Lower 
Old Red volcanic plateau of Lorne. 
DuBH (Forth basin). — Lochan in drift much silted up. 
DuBH (Gairloch basin). — Rock-basin in Lewisian Gneiss, draining into 
Loch Bad an Sffalaig;. 
DuBH (Gruinard basin). — Rock-basin in Lewisian Gneiss, part of the 
Fionn Loch rock-basin, from which it is separated by a bar of 
moraine matter with only a shallow strait. 
DuBH (Ness basin). — Ponded by drift. 
DuBH (nan Uamh basin). — Rock-basin in crystalline schist on watershed 
between the heads of Lochs Eilort and nan Uamh. 
DuBH-MoR. — Rock-basin in epidiorite and schists of Loch Awe group at 
base of escarpment of the Lorne volcanic plateau. 
DuDDiNGSTON. — Remnant of a much larger lake, now mostly silted up, 
originally ponded by blown sand of the 100-ft. raised beach. From 
the position of Duddingston Loch with regard to the crags of Arthur's 
Seat, it is probable that part of it is a true rock-basin. 
DuiN, AN (Spey basin). — Rock-basin in Moine schist on the pass between 
the Tromie, flowing into the Spey, and the Edendon Water, flowing 
into the Garry and thence to the Tay. 
DuiN, AN (North Uist). — Tidal loch ; probably a rock-basin in Lewisian 
Gneiss, 
Dun A, AN. — Rock-basin in Lewisian Gneiss. 
Dungeon. — Rock-basin partly ponded by drift in greywackes and shales 
of Silurian age. The barrier at the outlet is a moraine, but the 
deeper part of the loch must be a rock-basin. 
Dun na Seilcheig. — Rock-basin resting partly on crystalline schists and 
partly on Old Red Sandstone, with some moraines lying on the 
rocky barrier at the outlet. 
Eaglais, na H-. — Kettle-hole in fluvio glacial deposits of 100-ft. raised beach. 
