THE FRESH- WATER LOCHS OF SCOTLAND. 87 
Temperature Observations . — Temperatures were taken in the deepest 
part of the loch, with the following results : — 
Surface ... ... ... ... ... ... ... 60°'OFahr. 
5 feet ... ... . . ... ... ... ... 60° ’0 , , 
10 „ 56° -5 ,, 
Loch Kennard (see Plate XXVI.). — Loch Kennard, a good fishing 
loch abounding with small trout, is situated in Strathtay, and flows 
into the river Bran by the Ballinloan burn. Its shores are nearly all 
wooded, and where not planted with trees the low hills are covered 
with heather. It is peculiar in outline, somewhat resembling that of a 
young mushroom, the stem pointing west and the apex of the crown 
pointing north-east. It is over two-thirds of a mile in length, and over 
one-third of a mile in maximum breadth, the mean breadth being over 
one-sixth of a mile, or 26 per cent, of the length. Its waters cover an 
area of about 77 acres, or nearly one-eighth of a square mile, and it 
drains an area seven times greater, or nearly nine-tenths of a square 
mile. Nearly 50 soundings were taken, the maximum depth observed 
being 72 feet. The volume of water is estimated at 108,439,000 cubic 
feet, and the mean depth at 32J feet, or 45 per cent, of the maximum 
depth. The length of the loch is 50 times the maximum depth and 111 
times the mean depth Loch Kennard forms a simple basin, with here 
and there minor undulations of the bottom. The deepest water (72 feet) 
is found in the centre of the widest part of the loch, to the east of the 
constriction in its outline ; in the middle of this constriction a depth of 
70 feet was found, but immediately to the west the bottom rises to 50 
feet beneath the surface, and falls again further west to a depth cf 
63 feet. The 25-feet basin is half a mile in length and over a quarter 
of a mile in maximum width, while the 50-feet basin is over one-third 
of a mile in length. The area of the lake-floor covered by less than 
25 feet of water is nearly 30 acres, or 38 per cent, of the entire area of 
the loch; that covered by water between 25 and 50 feet in depth is 
about 33 acres, or 43 per cent. ; while that covered by more than 50 
feet of water is over 14 acres, or 19 per cent, of the total area of the 
loch. These figures show that the average slope is steeper between the 
shore and the 25-feet contour-line than between the 25-feet and 50-feet 
contours. Loch Kennard was surveyed on May 29, 1903 ; the elevation 
of the surface of the water above the sea was not determined. 
T emperature Observations . — Temperatures were taken in the deepest 
part of the loch, with the following results : — 
Surface ... ... ... ... ... ... ... 56° ‘7 Fahr. 
5 feet 51°-0 ,, 
10 „ 48° -3 „ 
‘^5 ,, 46°0 ,, 
50 ,, 45°-5 ,, 
72 „ 45°-3 ,, 
