THE FRESH-WATER LOCHS OF SCOTLAND. 
169 
76 acres 56 *5 per cent. 
45 ,, 33-4 „ 
14 „ lOT 
135 „ lOO'O 
The northern portion is one-third of a mile in length, with a 
maximum breadth of a quarter of a mile and a mean breadth of one- 
sixth of a mile. The area is about 40 acres, and it drains directly an 
area of about 5 square miles, but, including the area draining into the 
southern portion, the total drainage area is about 7| square miles. 
Over 20 soundings were taken, the maximum depth observed being 59 
feet. The volume of water is estimated at 43,274,000 cubic feet, and 
the mean depth at 24J feet. The floor of this portion of Lochan 
Gainmheich is not so perfectly regular in conformation as that of the 
southern portion. There is an isolated sounding of 27 feet opposite the 
outflow, and within the 25-feet area the bottom is slightly undulating; 
the maximum depth of 59 feet was observed about 120 yards from the 
southern shore, and this was the only sounding exceeding 45 feet in 
depth. 
Lochan Gainmheich was surveyed on September 10, 1902, the 
surface of the water being 251 -5 feet above sea-level; when levelled by 
the Ordnance Survey officers on August 26, 1870, the elevation of the 
lake-surface was 251*1 feet above the sea. The highest drift-mark seen 
was 3*4 feet above the surface of the water on September 10, 1902. 
Temperature Observations. — Temperature observations taken in the 
deepest part of the loch at 4 p.m. on September 10, 1902, gave the 
following results : — 
Surface ... ... . .. ... ... ... 55°*5 Fahr. 
50 feet 55° *3 „ 
110 ,, 54°-0 „ 
Loch Shinaskink (see Plate XXXIX.). — Loch Skinaskink (or 
Shianas-kaig) is a large loch lying about 2J miles to the east of Enard 
Bay, into which it drains by the river Polly. It is one of the most 
interesting lochs visited by the Lake Survey, because of the extreme 
irregularity both of its outline and of the conformation of the lake-floor. 
So irregular is the outline of the loch that it has over 17 miles of 
shore-line. It is a splendid trout loch, but preserved, and the islands 
are covered with birch woods where deer are often found; the largest 
island is Eilean Mor, near the centre of the loch, and there are two 
islands named Eilean Dubh, one near Eilean Mor in the centre of the 
loch, and the other in the north-eastern arm. The ground to the west 
and north of the loch is low, but to the east and south rise Cul Mor 
(2700 feet), Cul Beag (2500 feet), and An Stac (2000 feet). There is a 
0 to 50 feet 
50 „ 100 „ 
Over 100 ,, 
