278 



BATHYMETRICAL SURVEY OF 



The 1901 observations show a range exceeding 10, whereas the 1902 

 observations show that the temperature was practically uniform from 

 surface to bottom, which may perhaps be ascribed to the influence 

 of the strong winds prevailing at the time of the survey, causing a 

 thorough circulation in the whole body of water. 



Loch Kinellan (see Plate LXL). Loch Kinellan is a small shallow 

 loch near Strathpeffer, which was surveyed on August 23, 1902. The 

 elevation of the lake-surface was not determined by levelling, but 

 from the Ordnance Survey contours it is evidently nearly 500 feet 

 above the sea. It trends north-east and south-west, widest in the 

 south-western portion, and with a large wooded island near the centre. 

 Weeds abound along the western and south-western shores, and also 

 between the island and the eastern shore. It is one-third of a mile 

 in length, and its waters cover an area of about 15 acres. Soundings 

 of 10 and 11 feet were taken to the north-east of the island, but the 

 deepest part lies to the south-west, the maximum depth of 16 feet 

 having been observed about midway between the island and the 

 southern shore; 73 per cent, of the lake-floor is covered by less than 

 10 feet of water. The volume of water is estimated at 5 million cubic 

 feet, and the mean depth at over 7 feet. The temperature of the 

 surface water at 12.30 p.m. on the date of the survey was 58-7 

 Fahr., and at a depth of 14 feet 58'3. 



Loch Ussie (see Plate LXI.). Loch Ussie (or Usie) is about a mile 

 from Strathpeffer and 3 miles from Dingwall. It is irregular and 

 subcircular in outline, with a maximum diameter from north-east to 

 south-west of nearly a mile. There is one large island with a heronry 

 upon it, and several smaller ones, and weeds are abundant in some 

 of the bays and in the vicinity of the islands. It was surveyed on 

 August 29, 1902, but the elevation above the sea was not determined 



