The Druids were suspected of magic, which, Pliny remarks, derived its origin from medicine. They highly esteemed a kind of stone, or fossil, called _Anginum Ovum_, or Serpents' Egg, which should make the possessor superior in all disputes, and procure the favour of great persons. It was in the form of a ring of glass, either plain or streaked, and was asserted to be produced by the united salivas of a cluster of serpents, raised up in the air by their hissing; when, to be perfectly efficacious, it was to be caught in a clean white cloth before it fell to the ground, the person who received it instantly mounting a swift horse, and riding away at full speed from the rage of the serpents, who pursued him with like rapidity, until they arrived at a river. It has been supposed that these charms were no other than rings of painted glass; and, as it is allowed that the British had home manufactures of glass, it seems that there were imitations of them sold at an equally high price with the real amulet. Their genuineness was to be tried by their setting them in gold, and observing if they swam against the stream when cast into the water; they were, in fact, beads of glass, and the notion of their rare virtues exactly accords with the African exposition in the present day of the Aggry beads. Sir Richard Colt Hoare found one of the Druidic beads in a barrow in Wiltshire, in material resembling little figures found with the mummies in Egypt, and to be seen in the British Museum. "This curious bead," says Sir Richard Hoare, "has two circular lines, of opaque sky-blue and white, and seems to represent a serpent entwined round a centre, which is perforated. This was certainly one of the Glain Neidyr of the Britons; derived from _Glain_, which is pure and holy, and _Neidyr_, a snake."[5] The accounts we have of the Druidical orations and discourses afford some notion of their admitted eloquence, which was of a lofty, impassioned, and mysterious character. Their counsel was equally solicited and regarded; and those orators who succeeded the Druids in the Western Islands seem to have possessed no less power, since, if one of them asked anything even of the greatest inhabitant, as his dress, horse, or arms, it was immediately given up to him--sometimes from respect, and sometimes from fear of being satirized, which was considered a great dishonour. The British chieftains, also, appear to have been gifted with considerable oratorical powers when they addressed their soldiers before a battle; as Tacitus translates the British names of such by "incentives to war."