president's address. 243 



evening. From thence they went on by train to Slaggyford. 

 There, on leaving the station, they walked a short distance up 

 the South Tyne, then crossing the stream by a footbridge, struck 

 the Barhaugh Burn, the course of which stream was followed for 

 a mile or two. The excursionists then found themselves on "Wil- 

 liamstone Fell, from the summit of which the views looking back 

 over the valley of the South Tyne to the Cumberland Hills are 

 very fine. "Williamstone Fell was traversed in a north-easterly 

 direction until the Lough at the head of Snowhope Burn was 

 reached. This bleak little tarn, according to the calculation of 

 one of the party, who carried an aneroid barometer, is seventeen 

 hundred and fifty feet above the sea. It contains no vegetation, 

 but is filled with boulders of millstone grit, which at this point 

 makes its appearance above the limestone. Some of the members 

 then went on a little further to examine the "Old Lough," a 

 still smaller piece of water, which lies a few hundred yards to the 

 east of the other tarn. It was found to be much overgrown with 

 reeds and grass, and to be surrounded by a very swampy margin. 

 There were indications that this piece of water had once occupied 

 a much larger area, and that it had been diminished in size by 

 drainage. Mr. Or. S. Brady found in it Daphnia mucronata, 

 Miiller, which was abundant, and also Acantholeberis curvirostris, 

 Miiller, Alona elongate/,, G. 0. Sars, and Chydorus spheericus, 

 Miiller. In the larger lough there were living Cypris ovum, 

 Jurine, JBosmina longirostris, Miiller, and Alona elongate/,. The 

 last named species has not as yet been recorded as a member of 

 the British Fauna, though Mr. Brady and myself find it to be 

 not uncommon in the lakes and mountain tarns of the North of 

 England. It has probably hitherto been confounded with Alona 

 que/dreingularis. The walk down Snowhope Burn was rough and 

 picturesque, and the bed of the stream was followed for a consi- 

 derable part of the distance. During the excursion the ordinary 

 fossils of the limestone were observed in great abundance : the 

 plants gathered were chiefly ferns, and of these there was a 

 fair variety — e. g., Zastrcea filix-ma$ } L. oreopteris, Athyrium 

 Jilixfwmina, Cystopteris freigilis, -Asplenium triclwmanes, Polypo- 

 dium viilgare, dryopteris and pliegopteris, Blechnum loreale, and 



