We shall see in a subsequent chapter how the divergent spiral patterns on the circular discs of enamel used to decorate the bronze bowls of the end of the Late-Celtic period were transferred bodily to the pages of the early Irish illuminated MSS. of the Gospels. Another method of ornamenting metalwork besides enamelling was by means of settings of different materials fixed in place by small pins or rivets. As instances we have the bronze shield from the River Witham,[279] now in the British Museum, set with red coral; the bronze fibula from Datchet, Oxon,[280] set with amber and blue glass; and most curious of all, a bronze object of unknown use from Carlton,[281] Northamptonshire, now in the Northampton Museum, inlaid with portions of the stem of a fossil encrinite. A very effective kind of decorative metalwork may be made out of wire, bent so as to form a series of loops, of which we have British examples in the bracelets from the Early Iron Age burial in Deepdale,[282] Derbyshire; and a foreign specimen in a fibula from the cemetery of the La Tène period at Jezerine,[283] in Bosnia-Herzegovina. [279] J. Kemble’s _Horæ Ferales_, p. 14, and pl. 15. [280] _Proc. Soc. Ant. Lond._, ser. 2, vol. xv., p. 191. [281] _Ibid._, ser. 2, vol. xvii., p. 166. [282] _The Reliquary_ for 1897, p. 101. [283] R. Munro’s _Boznia-Herzegovina_, p. 170. More or less akin to the looped wirework just mentioned are certain gold and silver chains made of fine wire. Dr. Arthur Evans has gone pretty fully into this subject in his paper in the _Archæologia_ (vol. lv., p. 394), describing the find of gold ornaments at Broighter, near Limavady, Co. Londonderry, amongst which were two chains of the kind referred to. The art of making these chains was no doubt of foreign origin, as they have been found in Etruscan tombs of the fifth century B.C. in Italy; with burials of the La Tène period in the cemetery of Jezerine, in Bosnia; and in a tomb in the Gaulish cemetery of Ornovasso, in the province of Turin. In Britain such chains were used during the period of the Roman occupation for the attachment of fibulæ worn in pairs, as in the case of those from Chorley,[284] Lancashire, and from Newcastle-on-Tyne,[285] Northumberland. We shall see in a subsequent chapter that the manufacture of these finely wrought chains of silver survived in early Christian times in Ireland, the best-known examples being those attached to the Tara brooch,[286] and to an enamelled pin from Clonmacnois.[287] With regard to the date of the chains, Dr. Arthur Evans says:—[288]