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 defined 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. 
FIG. 29. LOCH URIGILL, WITH SUILVEN AND CANISP IN THE DISTANCE. 
(Plrotogra/ph by Mr. H. Anderson.) 
Temperature Observations. 
— Temperature observations taken 
).m. on August 30, 1902, 
gave the following results : — - 
Surface 
57° *2 Fahr. 
10 feet ... 
56°-0 ,, 
20 ,, 
56°*0 ,, 
35 „ 
5.5° *8 ,, 
Gam 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 
M 
