FORE:Iron suspension bridges were also introduced towards the end of this reign. Chain bridges had been erected in China for nearly two thousand years, and rope bridges in India and South America still earlier. In England a foot-bridge of iron chains was erected at Middleton, over the Tees, in the middle of the eighteenth century. In 1816 a bridge of iron wire was thrown across the Gala Water; and another, on a different principle, the following year, was erected over the Tweed, at[193] King's Meadows. But now much greater and more complete works of the kind were to be executed. Captain (afterwards Sir Samuel) Brown introduced many improvements into these structures. He substituted iron ropes for hempen ones, thereby forming cable-chains, like those used in Wales on quarry tram-roads, and these he applied to suspension bridges. In 1819 he was commissioned to construct an iron suspension bridge over the Tweed, near Kelso, called the union Bridge, which he completed in 1820, at a cost of five thousand pounds. In 1827 the first suspension bridge was thrown over the Thames by Mr. William Tierney Clarke; and in 1818 Telford commenced his great work of throwing a suspension bridge over the Menai Strait, near Bangor, which he completed in 1825. The main opening of this stupendous work is five hundred and sixty feet wide, and one hundred feet above high-water mark. The length of the roadway of the bridge is one thousand feet. The cost was one hundred and twenty thousand pounds. This was Telford's chef-d'?uvre. But the same neighbourhood was destined to see a more stupendous structure span the Strait from the Welsh shore to Anglesey. This was the tubular railway bridge, connecting the London and Holyhead line, within view of Telford's elegant suspension bridge. This was erected by Robert Stephenson, from his own design, greatly improved by suggestions from William Fairbairn of Manchester. It was completed in October, 1850, at a cost of six hundred and twenty-five thousand eight hundred and sixty-five pounds. Further description of this great work is not proper here, as it belongs to a later date, but it seemed fit to mention it in passing, as an evidence of the progress of the engineering science in the reign of Victoria. The Year of RevolutionsLord Palmerston's Advice to SpainIt is rejected by the Duke of SotomayorDismissal of Sir H. BulwerThe Revolution in GermanyCondition of PrussiaThe King's OrdinanceHe disclaims a Desire to become German EmperorThe National Assembly dispersed by ForceA New ConstitutionThe King declines the German CrownThe Revolution in ViennaFlight of Metternich and of the EmperorAffairs in BohemiaCroats and HungariansJellachich secretly encouragedRevolt of HungaryMurder of LambergDespotic Decrees from ViennaThe second Revolution in ViennaBombardment of ViennaAccession of Francis JosephCommencement of the WarDefeats of the AustriansQuarrel between Kossuth and G?rgeiRussian InterventionCollapse of the InsurrectionThe Vengeance of AustriaDeath of Count BatthyaniLord Palmerston's ProtestSchwartzenberg's ReplyThe Hungarian RefugeesThe Revolution in ItalyRevolt of VeniceMilan in ArmsRetreat of RadetzkyEnthusiasm of the ItaliansRevolution and counter-Revolution in Sicily and NaplesDifficulties of the PopeRepublic at RomeThe War in LombardyAustrian OverturesRadetzky's SuccessesFrench and British MediationArmistice arrangedResumption of HostilitiesBattle of NovaraAbdication of Charles AlbertTerms of PeaceSurrender of Venice, Bologna, and other Italian CitiesForeign Intervention in RomeThe French ExpeditionTemporary Successes of the RomansSiege and Fall of RomeRestoration of the PopeParliamentary Debates on Italian AffairsLord Palmerston's Defence of his Policy.