118 Proceedings of the Royal Society of Edinburgh. [Sess. 



less scattered ; they are as follows : — Littorella lacustris, Lobelia Dortmanna, 

 Myriophyllum alterniflorum, Jiincus fluitans, Potamogeton lucens, P. natans, 

 Glyceria fluitans, Heleocharis multicaulis, H. palustris, Equisetum limosum, 

 Carex rostrata, C. Goodenovii, C. flacca, var. stictocarpa, C. flava, var. minor, 

 Juncus effusus, J. conglomeratus, J. lamprocarpus, Ranunculus Flammula, 

 Mentha sativa, Eriophorum polystachion, and Hydrocotyle vulgaris. 



Lochenbreck Loch has a rhomboidal outline, each side being about 

 I mile long. It is situated at an elevation of 651 feet above sea level, 

 amongst the hills, about 7 miles N.N.E. from Gatehouse-of-Fleet, and 

 has the characteristic features of a bare highland loch, modified by a 

 plantation of coniferous trees on its eastern shore. The shores are 

 stony, and the water, which has a maximum depth of 15 feet, is clear, but 

 slightly peaty. The flora is of the ordinary type, excepting an abundance 

 of Heleocharis multicaulis, some of which, growing in water 6 to 12 inches 

 deep, had floating leaves. The western shore has a thin zone of Phragmites 

 communis and associations of Carex rostrata, whilst the following grow 

 not only there, but some of them at other parts of the loch as well: — 

 Lobelia Dortmanna, Littorella lacustris, Isoetes lacustris, Juncus fluitans, 

 Heleocharis palustris, Castalia speciosa, Juncus lamprocarpus, J. bufonius, 

 Ranunculus Flammula, Juncus supinus (erect form 6 inches high), Caltha 

 palustris, Sparganium natans, and Potamogeton polygonifolius. A number 

 of common Bryophytes occur upon the shores. Sphagnum acutifolium 

 being particularly abundant in some of the wet places. 



Woodhall Loch, or Loch Grenoch, is 2 miles N.E. of the last 

 mentioned. It is nearly 2 miles long by ^ mile broad, at an elevation of 

 173 feet above sea level. Being somewhat wind-sheltered by low hills, 

 and surrounded by meadow, grassy moor, or deciduous wood, it presents 

 the general features of a lowland loch, saving that its water, which has a 

 maximum depth of 49 feet, is slightly peaty. Here and there a gravelly 

 bay occurs, but frequently the moor or meadow land abuts upon the water 

 without the intervention of a shore. Where a strip of shore does occur, it 

 is narrow, stony, and frequentlj^ covered with Juncus lamprocarpus and 

 J. acutiflorus. Being provided with a wide but shallow outflow, and fed 

 only by small streams, the level of this loch has but little rise and fall, 

 because in wet weather the water readily escapes, and in a dry season the 

 level is maintained by the shallow effluent. The west side has a reedy or 

 sedgy margin, almost continuous throughout its length, but on the east 

 side the reeds are mostly restricted to the bays. At either end there are 

 large associations of Equisetum limosum, and at the north end the 

 specimens of this plant are very large, rising 3 or 4 feet out of water 6 feet 



