THE FRESH-WATER LOCHS OF SCOTLAND. 
393 
loch, 154 feet, and near the other end of the area there is a sounding of 
129 feet, with a depth of only 108 feet between them. The second 50- 
feet area is half a mile south-west of the river Garry, and is marked by 
an isolated sounding of 57 feet. The third 50-feet area begins half a 
mile from the south-west end, and extends down the loch for a mile. It 
is the largest basin in the loch, but not so deep as the more northerly 
one, the greatest dejDth in it being 133 feet. The fourth 50-feet area 
is close to the upper end of the loch. It is one-third of a mile long, 
and is scarcely separated from the larger one, as they are close together, 
and the depth between is 48 feet. In this fourth basin the greatest 
depth is 84 feet. 
f 
FIG. 61. LOCH OICH, LOOKING SOUTH-WEST; C ALDER BURN IN THE FOREGROUND. 
(Photograph by Mr. O. West. From'‘Proc. Roy. Soc. Edin.,” by permission of the Council.) 
T emperatare Observations . — The following serial temperatures were 
n the deepest part of the loch. 
series 
I. on May 1, 19' 
I. on September 25, 
1903: — 
I. 
II. 
Surface 
44° -9 
55°-0Fahr. 
10 feet 
44° -9 
54° 0 ,, 
20 „ 
44° -8 
54°0 ,, 
30 „ 
— . 
54° 0 „ 
40 „ 
44° -2 
53°-8 ,, 
50 „ 
— 
53° -8 ,, 
60 ,, 
— 
53°-8 ,, 
70 ,, 
— 
53°-8 ,, 
80 ,, 
43°-9 
53°0 „ 
90 ,, 
— 
51°-9 „ 
100 „ 
— 
49°-8 ,, 
120 „ 
— 
48° -8 „ 
130 „ 
43° -0 
* • • * > 9 . 
