280 
BATHYMETRICAL SURVEY OF 
365 feet indicates a shoaling of the water to 346 feet,- followed by a 
deepening of the water to 354 feet, which is well brought out in the 
cross section C-D on the map. The longitudinal section A-B shows the 
rapid deepening of the water on proceeding from the north-west end, 
and the gradual shoaling of the water on approaching the opposite end 
of the loch. The areas between the consecutive contour-lines, and the 
percentages to the total area of the loch, are as follows : — 
0 to 100 feet 
454 acres 
38 T per cent. 
100 „ 200 „ 
309 „ 
25-8 
200 „ 300 ,, 
269 „ 
22-6 „ ^ 
Over 300 ,, 
161 „ 
13-5 „ 
1193 „ 
100-0 
The comparatively large area of the lake-floor covered by more than 
300 feet of water indicates the flat-bottomed character of the deeper 
part of the loch, and this is also shown by the comparatively great 
width of the 200-feet and 300-feet basins, and is well seen in the cross 
section C-D. 
Temperature Observations. — An interesting series of temperatures 
was taken in the deepest part of Loch Glass at 6 p.m. on August 27, 
1902, as given in the following table: — 
Surface .. ... ... ... ... ... ... 54°*7 Fahr. 
50feet • 51°-7 „ 
100 „ 46°*2 „ 
150 „ ■ ... 43°-5 „ 
250 „ 42°*5 „ 
350 42°-3 ,, 
This series shows a range of temperature from surface to bottom 
amounting to 12°-4, the greatest fall being one of 5°’5 between 50 and 
100 feet. The temperatures taken in Loch Achilty six days earlier gave 
a higher temperature from the surface down to 30 feet than was 
observed at the surface of Loch Glass, but a lower temperature at 50 
and 100 feet, the differences being respectively 5°-7 and 1°*3. 
Loch Morie. (see Plate LXIII.). — Loch Morie (or Muilie) lies less 
than 2 miles to the north of Loch Glass, with the crests of Meall Beag 
(2121 feet) and Meall Mor (2419 feet) rising between them. It is an 
important and deep loch, containing trout, but the Ashing is preserved. 
Lochs a’ Chaoruinn and Loch Magharaidh, which flow into it, could 
not be sounded for lack of boats. It trends in a north-west and south- 
east direction, with a slight sinuosity in its outline. It is 2J miles 
in length, with a maximum breadth of over half a mile. Its waters 
cover an area of nearly a square mile, and it receives the drainage from 
a large tract of the mountainous country to the north-west, the area 
