226 
BATHYMETRICAL SURVEY OF 
Surface 
5 feet 
10 „ 
20 „ 
30 ,, 
50 „ 
60 ,, 
70 ,, 
55°'5 Fahr. 
55° -5 „ 
55°-3 ,, 
55° '3 ,, 
55°-2 ,, 
55°T ,, 
54°-3 ,, 
50°-9 ,, 
This series shows that the temperature was practically constant 
down to 50 feet, the fall being less than thence a fall of 0°-8 between 
50 and 60 feet, and then a rapid fall of between 60 and 70 feet. 
Loch Kernsary (see Plate XLVII.). — Loch Kernsary is situated to 
the north-east of Inveran, at the foot of Loch Maree, into which it 
drains through the little Loch Poll Uidhe a’ Chro’ and the Inveran 
river. There was no boat passage into Poll Uidhe a’ Chro’, and it was 
found impossible to carry the boat across. The ground around Loch 
Kernsary is low, except to the north, where Meall an Leathaid Dharaich 
rises to over 400 feet. The island near the south-western shore in the 
main portion of the loch is an artificial crannog, but nothing is known 
of its history. 
Loch Kernsary was surveyed on July 25 and 26, 1902 ; the elevation 
of the water-surface above the sea was determined, by levelling from 
Loch Maree, as being 68*0 feet. The keeper stated that the water would 
rise 2J feet above, and fall 1 foot below this level, but a drift-mark 
was observed 8*4 feet above the surface of the water. 
Loch Kernsary is about 1 J miles in length, with a maximum breadth 
of nearly half a mile, the mean breadth being about 350 yards. Its 
waters cover an area of about 200 acres, and it drains directly an area 
of nearly 7| square miles, but since it receives the outflow from Loch 
Ghiuragarstidh, its total drainage area is over 8J square miles — an area 
27 J times greater than that of the loch. The maximum depth of 93 
feet was observed about 250 yards from the north-western extremity of 
the loch. The volume of water is estimated at 333 million cubic feet, 
and the mean depth at 38 feet. The breadth of the loch at the position 
of the deepest sounding is ten times the depth. The shore development 
is 2-51, and the insulosity 0*008. 
The floor of Loch Kernsary is rather irregular, there being two 
25-feet areas and four 50-feet areas. The main 25-feet area extends 
throughout the greater part of the loch, while the smaller one lies in 
the south-western part of the loch. Three of the 50-feet areas are 
enclosed by the main 25-feet area : the north-western one containing 
the deepest water in the loch, the central one having a maximum depth 
of 66 feet, and the south-eastern one a maximum depth of 69 feet, 
therefore falling just below sea-level ; the fourth 50-feet area, based 
