THE FRESH-WATER LOCHS OF SCOTLAND. 113 
Temperature Ohservations . — Temperature observations gave the 
following results : — 
Surface . 
10 feet . 
11 „ 
12 „ . 
13 „ . 
59° 0 Fahr. 
59° -0 „ 
58° -8 ,, 
55° -8 ,, 
55° -0 ,, 
This series shows that the upper . 10 feet of water had a uniformi 
temperature, but between 11 and 12 feet there was a fall of 3°, the 
extreme range from surface to bottom being 4°. 
Loch Freuchie (see Plate XXXI.). — Loch Freuchie (or Fraochie), 
near Amulree, is a very pretty loch amid pastoral scenery, the grassy 
FIG. 25. LOCH FREUCHIE, LOOKING S.E. FROM BRIDGE OVER INLET. 
(Photograph hg R. Dykes.) 
shores sloping gently up on both sides, with here and there patches of 
wood. It was formerly a good trout loch, but in recent years it has 
been overrun by pike ; steps have been taken, however, to keep down 
the pike, and the fishing is now improving. It flows by the river Bran 
into the river Tay at Dunk eld. Loch Freuchie trends in a north- 
west and south-east direction, widest in the north-western half and 
narrowing towards the south-east end. It is 1| miles in length, with a 
maximum breadth of nearly half a mile, the mean breadth being about 
one-third of a mile, or 18 per cent, of the length. Its waters cover an 
area of about 348 acres, or over half a square mile, and it drains an 
area 55 times greater — an area of over 23 square miles. Nearly 90 
soundings were taken, the maximum depth observed being 62 feet. The 
volume of water contained in the loch is estimated at 346,564,000 cubic- 
feet, and the mean depth at 23 feet, or 37 per cent, of the maximum 
I 
