110 
Proceedings of the Royal Society of Edinburgh. [Sess. 
are features of other parts. Submersed rocks are frequently covered with 
such Algae as Batrachospermum vagum, Ulothrix, Zygogonium, etc. Figs. 
7 and 10 illustrate this loch and its surroundings. 
Loch Narroch is quite a small circular sheet of water at the east end of 
Loch Valley. In general features it closely resembles the neighbouring 
lochs. The rocks of the margin were covered with remarkable quantities 
of Algae, chiefly of the genera Batrachospermum, Ulothrix, Zygogonium, 
Zygnema, and Mougeotia. 
Round Loch and Long Loch of Glenhead are both to the south of 
Loch Valley; they are, however, at a lower elevation and smaller. These 
lochs are very bare of plants, and are otherwise similar to those recently 
described. They are not of sufficient botanical interest, so far as I could 
glean without a boat, to merit further discussion. Fig. 11 illustrates these 
lochs, and the treeless, wild mountains around them. 
Loch Dee, which is 1 \ miles long by f mile wide, and 36 feet deep, 
is the largest of this series of lochs. The outline is irregular, a peninsula 
from the south shore and another from the north jutting out so as almost 
to divide the loch. It is situated at an elevation of 739 feet above sea 
level, amidst wild and lonely scenery, about 5 miles south of Loch Enoch. 
Although at a lower elevation, it is similar in general features to that and 
the neighbouring lochs, excepting that the sand of its shores is not white 
but of a brownish tinge ; the water also differs in being somewhat more 
peaty. Away from the sandy bays the shores are mostly rocky. The flora 
is extremely poor, and being composed of the same species as occur in the 
previously mentioned lochs, need not be specially described. A boat which 
is kept here was out of repair during my visit, but careful attention to 
plants washed up on the shore revealed nothing uncommon to the district. 
Bryophytes abound on the shores and on the exposed rocks. Very con- 
spicuous also are the lichens which cover the numerous rocks by the shore ; 
the most plentiful of these are — Platysma glaucum, Cetraria muricata, 
Parmelia lanata, P. omphalodes, Alectoria jubata, Sphserophoron coralloides, 
and Lecanora tartarea. Fig. 12 affords a view of the loch, chiefly its 
S.W. portion. 
Dry Loch, Round Loch, and Long Loch of the Dungeon. — These are 
small sheets of water, each a few hundreds of yards long, and they are all 
connected by a stream which first flows out of the Dry Loch, that being 
the highest of the three ; this stream ultimately becomes the River Dee. 
Their shores are stony or peaty, and their water is slightly peaty but clear. 
These lochs are situated at the highest and wildest part of the glen (p. 106),, 
between Dungeon Hill and Craignaw, and the scenery around is extremely 
