166 
BATHYMETRICAL SURVEY OF 
or about 300 yards. Its waters cover an area of about 52 acres, and it 
drains an area of IJ square miles. Thirty soundings were taken, the 
maximum depth observed being 69 feet. The volume of water is 
estimated at 69,264,000 cubic feet, and the mean depth at 30 feet. 
The loch is irregular in outline, what may be called the body of the 
loch sending out a broad arm at right angles. The 25-feet area follows 
approximately the outline of the loch, and encloses two 50-feet basins, 
one towards the extremity of the arm containing the maximum depth 
of the loch (69 feet), the other centrally placed in the body of the loch 
with a maximum depth of 65 feet. The greatest depth observed between 
the two 50-feet basins was 38 feet. The areas between the consecutive 
contour-lines and the percentages to the total area of the loch are as 
follows : — 
0 to 25 feet 
25 „ 50 „ 
Over 50 ,, 
21 acres 40 ‘2 per cent. 
22 ,, 42-7 
9 „ 17-1 „ 
52 ,, 100-0 
Loch a’ Mhiotailt was surveyed on September 8, 1902, when the 
water was at the same level as that in Loch Veyatie, viz., 365*6 feet 
above the sea. The soundings have been corrected in the same manner 
as the soundings taken in Loch Veyatie on the same date, so as to bring 
all the soundings into agreement with those taken in Loch Veyatie on 
August 29, 1902, when the surface of that loch stood at a level of 364*8 
feet above the sea. 
Fiotin'Luch (see Plate XXXVIII.). — Fionn Loch (or Loch Fewin 
or Fewn) lies about three miles to the east of Enard Bay and three- 
quarters of a mile to the north-west of Loch Veyatie, from which it 
derives the greater part of its water. Besides this, however, it drains 
the southern slopes of Suilven, which is little more than a mile distant 
from the loch. The great feature of the Fionn Loch is the existence of 
alluvial terraces surrounding the loch. The two lowest are the most 
extensive, together having an average breadth of 100 yards, their 
heights being about 20 and 30 feet above the surface of the loch. When 
the water stood at this level Loch Fionn must have been connected with 
Loch Veyatie, the difference in their levels, as observed by the Lake 
Survey, being only about 8 feet. This former loch must have formed 
a fine sheet of water some miles in length, with a winding arm where 
is now Loch a’ Mhiotailt. There is another still higher terrace seen to 
- the north of Na Tri Lochan. The Fionn Loch discharges its waters by 
the Kirkaig river, which forms the renowned Falls of Kirkaig about 
three-quarters of a mile below the loch. Very heavy rains fell on the date 
of the survey and on the previous days, and in the narrow parts of the 
