124 Proceedings of the Royal Society of Edinburgh. [Sess. 
flora consists of plants common to the district, and need not be especially 
enumerated, nothing of particular interest being noticed. 
Loch Brack is a mile N.E. of Barscobe Loch, and is similar to it in 
general features, but smaller. Between the grass moor and the water a 
narrow zone of stony shore overgrown with Juncus acutiflorus intervenes 
more or less all around the loch ; at the base of these plants quantities 
of Scapania sub-alpina find a congenial habitat. There are also a number 
of commoner Bryophytes upon the shores, and an average number of 
common Phanerogams occur, but nothing of special merit was observed. 
Loch Howie is 2 miles N.E. of Barscobe Loch, and is larger than 
it, being f mile long by J mile wide, and lying S.W. and N.E. The 
surface is 757 feet above sea level, and the maximum depth is 39 feet. 
In general features it, again, resembles Barscobe Loch. At the S.W. end 
there are a few plants of Phragmites communis ; these also occur, but much 
more abundantly, at the N.E. end, but they are all small specimens, none 
standing more than 3 feet above the water. There is also a small 
association of Scirpus lacustris at the N.E. end. Carex filiformis is very 
abundant at this loch, occupying situations that are usually taken up by 
Carex rostrata. Besides a number of common plants, no other features of 
interest were noted here. 
Loch Skae is a small oval loch about \ mile long, situated \ mile 
E. of Loch Howie, at an elevation of 864 feet above sea level. The 
maximum depth is 35 feet. The general flora is similar to that of the 
three lochs just mentioned, but the physical features are different. The 
surrounding moors have more heather and peat ; the scenery, particularly 
on the east, is rocky and wild, the hill rising steeply above the loch ; the 
water is a little more peaty, and the east shore is rocky or stony. Isoetes 
lacustris, Utricularia intermedia, and Potamogeton polygonifolius appear to 
be more abundant here than at the other three lochs. The rocks on the 
east shore are overgrown with mosses, chiefly Hypnum cupressiforme and 
Rhacomitrium aciculare. There are associations of Phragmites communis, 
Carex rostrata, and C. filiformis. 
The chief plants more or less common to the four last-mentioned lochs 
are — Littorella lacustris, Lobelia Dortmanna, Isoetes lacustris, Nitella opaca, 
Juncus fluitans, Myriophyllum alterniflorum, Utricularia intermedia, 
Potamogeton lucens, P. natans, P. polygonifolius, Castalia speciosa, Glyceria 
fluitans, Scirpus lacustris, Equisetum limosum, Phragmites communis, 
Heleocharis palustris, Menyanthes trifoliata, Carex filiformis, C. rostrata, C. 
Goodenovii, Juncus lamprocarpus, J. acutiflorus, J. effusus, Hydrocotyle 
vulgaris, Ranunculus Flammula, Carum verticillatum, Mentha sativa, 
