These are not the only instances in which the presence of iron has been ascertained in Irish bronze swords. In 1774 Governor Pownall laid before the Society of Antiquaries of London an account of some Irish antiquities, including two bronze swords found in a bog at Cullen, county Tipperary. In the communication he remarks,--"That the Society might have a precise and philosophic description of the metal, I applied to the Master of the Mint; and by his direction Mr. Alchorn, His Majesty's Assay-master, made an accurate assay of the metal. 'It appears,' he says, 'to be chiefly copper, interspersed with particles of iron, and perhaps some zinc, but without containing either gold or silver. It seems probable that the metal was cast in its present state, and afterwards reduced to its proper figure by filing. The iron might either have been obtained with the copper from the ore, or added afterwards in the fusion, to give the necessary rigidity of a weapon. But I confess myself unable to determine anything with certainty.'"[289] The analysis here appears to have been merely qualitative; and from the indefinite reference to the possible presence of zinc, it cannot be assumed to have been made with great strictness. The presence of iron, however, may be assumed as undoubted, whether it was the result of accident or design. One important result which these experiments furnish is, that the composition of the mixed metal of the Bronze Period indicates no such uniformity as might be anticipated in manufactures derived entirely from one source; but, on the contrary, that different examples of it belonging to the same period exhibit all the degrees of variation that might be expected in the work of isolated manufacturers, very partially acquainted with the chemical properties of the standard compound, and guided, for the most part, by the practical experience of the result of their labours. The variations in the proportions of the elements of the bronze are obviously such as to preclude all comparison with any ancient type. In regard to the favourite theory of Phœnician origin for these relics comparison is impossible, as we possess no authentic remains of Phœnician art. An analysis of Egyptian bronze relics, however, would furnish interesting results in regard to the ancient metallurgic arts practised in the countries bordering on the Mediterranean. Such arts, however, were by no means confined to the few ancient historic races, among whom the Tyrians and Phœnicians generally rank the foremost for skill in the working of metals. The Turditani, a tribe occupying the province of Andalusia, in Spain, are described by Polybius as related to the Celtæ, though Dr. Prichard conceives it more probable that they were of Iberian than of Celtic kindred.[290] They are stated to have been the most learned and polished people in Spain. They had books, poems, and laws composed in verse, and boasted of a knowledge of the use of letters for 6000 years. It is said of this