THE FRESH- WATER LOCHS OF SCOTLAND. 163 



of the survey it rose some six inches above the surface of the water. 

 The main basin is contained in the north-western portion of the loch, 

 where the bottom falls in two places below the 100-feet level, separated 

 by a slight shoaling of the water over a short interval. The larger of 

 these two 100-feet areas near the centre of the loch is three-quarters of 

 a mile in length, and the smaller, half a mile in length, approaches 

 within less than half a mile from the north-west end, running com- 

 paratively close to the south-eastern shore. It is curious to note that 

 the maximum depth observed in each of these two areas is identical (122 

 feet), though the two soundings are separated by an interval of about 

 a mile ; the deepest water on the rise between the two areas is 83 feet. 

 The slope along the north-eastern shore towards the north-west end of 

 the loch is very steep; in one place a sounding of 91 feet was taken 

 about 20 feet from the shore, and the cliff above was almost vertical and 

 50 feet in height. The areas between the consecutive contour-lines, and 

 the percentages to the total area of the loch, are as follows : 



to 25 feet 320 acres 49 '5 per cent. 



25 50 151 ,, 23-3 



50 75 67 10-4 



75 100 67 10-4 



Over 100 . 42 . 6 "4 



647 , 100-0 



Cam Loch was surveyed on August 27 and 28, 1902. The elevation 

 of the lake-surface above the sea could not be determined, but when 

 levelled by the Ordnance Survey officers on October 7, 1871, it was 

 found to be 404-8 feet above sea-level. Judging from the level of the 

 other lochs in the district at the end of August, 1902, its level was 

 probably about a foot lower than that quoted, and the boatman stated 

 that he had never seen the water more than two or three inches lower ; 

 the highest drift-mark seen was 3*7 feet above the surface of the water 

 on August 27, 1902. The temperature of the surface water was 56'2. 



Loch Veyatie (see Plate XXXVIII.). Loch Veyatie lies about half 

 a mile to the west of the village of Elphin. It receives the water from 

 the Cam Loch at its south-eastern end, where also the Amhainn a' 

 Chnocain enters the loch ; the water is discharged at the north-western 

 end of the loch by the Uidh Fhearna into the Fionn Loch. The ground 

 around the loch is low, except where Cul Mor rises to a height of over 

 2700 feet to the south-west, and Suilven (already referred to) to 

 the north-west. The loch is over 4 miles in length, with a maximum 

 breadth of nearly half a mile, the mean breadth being nearly a quarter 

 of a mile (or about 400 yards). Its waters cover an area of about 593 

 acres (or nearly one square mile), and it drains directly an area of over 



