Anniversary Address. 367 



their construction is, that their outward faces have all been 

 of rough stones. The formidable nature of the work may- 

 be imagined from three concentric circles about 15 feet apart, 

 each with a face of stone about 5 or 6 feet perpendicular. 

 The entrance is from the north-west, from ground somewhat 

 lower than the site of the fort. The dangers to be met by 

 this place were from the east, as both ditch and dyke seem 

 stronger in that direction. But as it now stands, there is 

 proof it must have been a formidable barrier to any foe in 

 old British times." 



The main body proceeded to Yetholm Loch. Mr. Oliver, 

 of Loch side, came and invited the Club to come to luncheon ; 

 only a few fell victims to his kind hospitality. Round the 

 margin of the Loch were gathered — Gicuta virosa, Scutellaria 

 galericulata, Lycopus Europeus, a white variety of Bartsia 

 Odontites, Scirpus lacustris, Campanula rapunculoides, 

 and growing in the water, Littorella lacustris, Zannichellia 

 palustris, the Yellow Water Lily, (Nuphar lutea) ; washed 

 to the shore were Callitriche autumnalis, Potamogeton 

 pectinatus, P. pusillus. At the west end of the Loch, the 

 following plants were found, Ranunculus lingua, Veronica 

 scutellata, Typha lalifolia, (Great Reed Mace), Lythrum 

 salicaria ; a few Mosses were found, including Mnium 

 Cinclidioides, and Climacium dendroides, (with fruit rising). 

 Primside Bog was next reached, and a rare treat for the 

 Botanists was found ; Vaccinium oxycoccus, Habenaria 

 bifolia, Carex filiformis, and G. limosa, Festuci canina, 

 and several Sphagnums fruiting very freely, The Sundew, 

 Drosera rotundifolia, and Butterwort, Pinguicula vulgaris, 

 were also found. In the walk down Bowmont were found, 

 Teesdalia nudicaulis, Trifolium arvense, Vicia sativa var., 

 Bobartii, Veronica anagallis, (Enanthe crocata, Ranunculus 

 tricophyllus, Dianthus deltoides, Antirrhinum vulgare, &c. 

 During the day's walk the following willows were gathered, 

 Salix pentandra, Russelliana, triandra, Forbyana,ferrugi- 

 nea, rugosa, cotinifolia, <&c. 



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