Thanks to our Armstrongs and Whitworths, our Browns and our Smiths, the iron defences of England, manned by our soldiers and our sailors, furnish the assurance of continued security for our gold and our wealth, and, what is infinitely more precious, for our industry and our liberty. [1] "Mr. John Buchanan, a zealous antiquary, writing in 1855, informs us that in the course of the eight years preceding that date, no less than seventeen canoes had been dug out of this estuarine silt [of the valley of the Clyde], and that he had personally inspected a large number of them before they were exhumed. Five of them lay buried in silt under the streets of Glasgow, one in a vertical position with the prow uppermost, as if it had sunk in a storm.... Almost every one of these ancient boats was formed out of a single oak-stem, hollowed out by blunt tools, probably stone axes, aided by the action of fire; a few were cut beautifully smooth, evidently with metallic tools. Hence a gradation could be traced from a pattern of extreme rudeness to one showing great mechanical ingenuity.... In one of the canoes a beautifully polished celt or axe of greenstone was found; in the bottom of another a plug of cork, which, as Mr. Geikie remarks, 'could only have come from the latitudes of Spain, Southern France, or Italy.'"--Sir C. LYELL, Antiquity of Man, 48-9. [2] THOMAS WRIGHT, F.S.A., The Celt, The Roman, and The Saxon, ed. 1861. [3] Referred to at length in the Antiquity of Man, by Sir C. Lyell, who adopts M. Worsaae's classification. [4] Mr. Mushet, however, observes that "the general use of hardened copper by the ancients for edge-tools and warlike instruments, does not preclude the supposition that iron was then comparatively plentiful, though it is probable that it was confined to the ruder arts of life. A knowledge of the mixture of copper, tin, and zinc, seems to have been among the first discoveries of the metallurgist. Instruments fabricated from these alloys, recommended by the use of ages, the perfection of the art, the splendour and polish of their surfaces, not easily injured by time and weather, would not soon be superseded by the invention of simple iron, inferior in edge and polish, at all times easily injured by rust, and in the early stages of its manufacture converted with difficulty into forms that required proportion or elegance."--(Papers on Iron and Steel, 365-6.) By some secret method that has been lost, perhaps because no longer needed since the invention of steel, the ancients manufactured bronze tools capable of taking a fine edge. In our own time, Chantrey the sculptor, in his reverence for classic metallurgy, had a bronze razor made with which he martyred himself in shaving; but none were found so hardy and devoted as to follow his example.