380 Proceedings of the Royal Physical Society. 
run when there is water to carry them, though in many 
cases they are prevented by falls from getting any distance 
from the sea. i 
None of the West Ross streams can be called early rivers,’ 
and except in the Ewe and Balgy the run of fish, even in 
the later spring months, is very small, the bulk of the erilse 
and sea-trout not coming up till the first spates of June. 
The exception in the case of the two rivers mentioned is, no 
doubt, due to their having a short course to the sea out of 
large lochs—Loch Maree and Loch Damph—in which the 
temperature of the water is, in some degree, raised and 
brought nearer to that of the Atlantic than in those streams 
which flow directly from the mountains, and are fed by the 
melting snows of spring. 
Lochs.—-Freshwater lochs are very numerous and of every 
size, from the alpine tarn high up in the mountain corrie, or 
the dark pools of the peaty flats, to the wide expanse of Loch 
Maree with its clustered, wooded islets, the breeding-places 
of Gulls, Divers, and possibly a few pairs of Grey-lag Geese. 
Salmon and sea-trout are found in greater or less numbers 
in the following lochs :—Na Sheallag in Dundonnell; Maree, 
Coulin, Clair, and Varanaich in Gairloch; Iasgaich at the 
head of Glen Torridon; Damph and Coultrie on the Balgy; 
Doule in Glen Shieldaig; Dhugaill and Sgamhain in 
Strathcarron. 
All those lochs in uninterrupted communication with the 
sea hold brown trout, varying much in size and quality, 
while into some others, apparently inaccessible, they have 
been introduced by human or other agency. 
Char occur in Loch Maree and three or four other small 
lochs in the Gairloch area, in Loch Damph, Loch ram Fiadh 
in Torridon, and Lochans Uaine and Corrie Lair in the Achna- 
shellach Forest. In the three last-mentioned localities they 
are of quite recent introduction. 
Pike are found in the river Kerry and Lochs Feur and 
_ Bad-na-Sgalaig in Gairloch, where they were introduced 
early in the present century. 
The larger lochs—Maree, Fionn, and Damph—sometimes 
reward the angler with large specimens of the so-called 
