58 
BATHYMETRICAL SURVEY OF 
following table, and those taken in Loch Ericht are shown graphically 
in the temperature section (Plate XIV.), since they are extremely 
interesting as illustrating the effect of the wind upon the distribution 
of temperature : — 
Loch 
Garry. 
Loch Ericht. 
Depth 
in feet. 
June 19, 
June 20, 
June 20, 
June 16, 
June 1 . 5 , 
June 20, 
June 21, 
1900, i 
1900, 1^ 
1900, 
1900, 91 
1900, 5i 
1900, 1 
1900. 
mile from 
miles from 
miles from 
miles from 
miles from 
mile from 
S. end. 
S. end. 
S. end. 
N. end. 
N. end. 
N. end. 
o 
0 
0 
0 
0 
0 
0 
0 
57 "0 
47-3 
49-0 
50 0 
50 0 
53-2 
55T 
5 
47 0 
48-7 
49-7 
6 
50 0 
10 
56 ’9 
47-2 
47 -8 
49 A 
25 
49-9 
30 
49-5 
46-1 
47 A 
48 -6 
54-2 
40 
45-8 
50 
44-6 
44-7 
44.7 
44-8 
52-3 
60 
46 -3 
43-4 
75 
42-6 
43-2 
44-0 
98 
4l'5 
100 
42 ’2 
42-9 
42-6 
105 
46 0 
120 
42-7 
150 
41 -3 
2(X) 
41-0 
41 T 
300 
40-7 
40 5 
400 
40-5 
40-5 
500 
40-5 ! 
1 
Loch Ericht . — Like Loch Katrine, Loch Ericht is said never to freeze 
over, and the surface temperature remains comparatively low through- 
out the summer. The surface temperatures taken in Loch Ericht 
during the visit from 15th to 20th June show a range of 10°'4, viz., 
from 46°-6 to 57°; the higher temperatures were obtained towards the 
northern end of the loch, and the lower temperatures towards the 
southern end of the loch. A glance at the temperature section (Plate 
XIV.), based upon the observations given in the table, shows that the 
warmer water was all collected towards the upper end of the loch, as 
the result of a south-easterly wind which blew at times during the six 
days that were devoted to the survey of the loch, colder water having 
been drawn up at the opposite end of the loch to supply the place of the 
warmer surface water driven before the wind. 
Loch Garry . — Loch Garry was visited on the 21st June, 1900, when 
the surface temperature was found to vary from 57° at the south-west 
end to 59°’4 at the north-east end, and this would seem to indicate a 
distribution of temperature similar to that observed in Loch Ericht, 
but since only one temperature series was taken, it is impossible to formi 
an idea of the distribution of temperature throughout the whole body 
of water. 
