THE FRESH- WATEK LOCHS OF SCOTLAND. 
97 
the surface above sea-level could not be determined. It was at the time of 
the survey (November 2, 1906) 2 feet higher than Loch Bradan, which 
was estimated to be 990 feet above sea-level. 
The surface temperature was 43°*0 Fahr., or less than that of Loch 
Bradan on the previous day. 
Loch Bradan (see Plate XXXVII.). — A small loch, situated high up 
among the hills, 4 miles west of Loch Boon. The rough moorland 
surrounding the loch rises more steeply on the south. The shores are 
stony, with a few exposures of rock. The length is nearly one mile, and 
the maximum breadth, in the middle of the length, a quarter of a mile. 
The bottom is nearly flat, with a maximum depth of 8 feet, and a mean 
depth of 4^ feet. Many banks of stones and single boulders project above 
the surface. The area is about 82 acres, and the volume 16 millions of 
cubic feet. The drainage area is about 5^ square miles, and includes 
Lochs Cornish and Lure. The water of Girvan enters at the west end of 
the loch, and flows out northward from the north-east corner. Two other 
large burns enter on the south side, one of them coming from Loch 
Brecbowie. 
No bench-iriark could be found near the loch. The level was estimated 
at about 990 feet above the sea on November 1, 1906. 
The temperature was 44°*5 Fahr. throughout. 
H 
