The three following beads here described are from the crannog of Lisnacroghera. Fig. 165, of opaque blue glass, very dark in colour, but relieved with white streaks of the same material, crossing each other obliquely. Fig. 166, of ordinary blue glass, quite plain; and, fig. 167, an elongated cylindrical bead of amber.[145] In Wilson’s _Prehistoric Annals of Scotland_, and in Keller’s _Ancient Lake Dwellings of Switzerland_, may be seen representations of beads, greatly resembling one from the crannog of Lough Ravel, county Antrim, as shown in fig. 168. Fig. 169, from the same locality, is somewhat similar, but the yellow, raised and rope-like decoration which encircles it does not form an integral part of the glass; it has been produced by laying the colour on the surface, instead of its being fused into the glass. The bead, fig. 170, although from the lands of Ballintlea, near Timahoe, Queen’s County, is of the same class as many discovered in crannogs. At top and bottom it exhibited indications of friction, showing it had been strung with others as a necklace, or some article of personal adornment. It is formed of sea-green glass, moulded to represent interlaced cords, the strands composed of threads of white glass; round the upper and lower rims there are small knobs of opaque yellow glass. That these beads are of native Irish manufacture is extremely probable, as, in two instances at least, lumps of blue glass in an unfashioned state have been discovered in connexion with crannogs, which also yielded beads of exactly the same colour and material. The majority of the beads present internal evidence of the manner in which they were made: “the glass has at first been in the form of a rod, then a portion, when in a soft state, was bent into the form of a bead, and sufficiently heated to cause the ends to unite.… When the ornamentation is composed of a spiral rod, it has been laid on in the same way, and the line of junction can be made out in every case.”[146] [Illustration: Fig. 171.--Bone Harp Pin from Ardakillen. Half-size.] [Illustration: Plate XXVIII. Harp, from the Crannog of Ballinderry. Woodwork restored.]