THE FRESH-WATER LOCHS OF SCOTLAND. 



161 



of the Allt nam Meur. Midway along the loch, towards the north- 

 eastern shore, is a rise of the bottom covered by only 3 feet of water. 

 The deepest part of the loch is near the north-west end, where there is 

 a small central area exceeding 20 feet in depth, the maximum depth 

 being 40 feet ; this little depression is well denned by a steep gradient. 

 Loch Urigill was surveyed on August 30, 1902. The level of the loch 

 could not be determined ; when visited by the officers of the Ordnance 

 Survey on October 5, 1871, the elevation was found to be 514-7 feet 

 above the sea. 



f- -W:^*^ 



FIG. 29. LOCH TJRIGILL, WITH SUILVEN AND CANISP IN THE DISTANCE. 



(Photograph by Mr. H. Anderson.) 



Temperature Observations. Temperature observations taken at 

 4 p.m. on August 30, 1902, gave the following results: 



Surface 

 10 feet 

 20 ., 

 3o . 



57 -2 Fahr. 

 56-0 ,, 

 56-0 



55 -8 



Cam Loch (see Plate XXXVIII.). Cam Loch (or Loch Cama) lies 

 about a mile to the north-west of Loch Urigill, and a mile to the west 

 of Ledmore. It is extremely irregular in outline and in conformation, 

 and includes one large and several small islands. The principal feeder 

 is the stream bearing the outflow from Lochs Borralan and Urigill, 

 which enters the loch at its south-eastern end, and here also is the exit 

 of the loch, the Amhuinn Mhor after a course of a few hundred yards 



