166 BATHYMETRICAL SURVEY OF 



or about 300 yards. Its waters cover an area of about 52 acres, and it 

 drains an area of 1J 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 : 



to 25 feet 21 acres 40 '2 per cent. 



25 50 22 42-7 



Over 50 , 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. 



Fionn Loch (see Plate XXXVIII.). Fioiin 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 7 \ 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 Lochaii. 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 



