Still journeying northward, we cross the hills between the Wear and the Tyne, and come to the New Castle which gives its name to Newcastle-upon-Tyne, the great coal shipping port. This is a strange-looking town, with red-tiled roofs, narrow, dingy, crooked streets, and myriads of chimneys belching forth smoke from the many iron-works. These mills and furnaces are numerous also in the surrounding country, while the neighborhood is a network of railways carrying coal from the various lines to the shipping-piers. But this famous city is not all smoke and coal-dust: its New Castle is an ancient structure, rather dilapidated now, coming down from the reign of Henry II., approached by steep stairways up the rock on which the keep is perched. It has a fine hall, which is used as a museum of Roman relics, and from the roof is a grand view along the Tyne. This castle has a well ninety-three feet deep bored in the rock. Newcastle in its newer parts has some fine buildings. Grey Street, containing the theatre and Exchange, for a space of about four hundred yards is claimed to be the finest street in the kingdom. In Low Friars Street is the old chapel of the Black Friars monastery, where Baliol did homage to Edward III. for the Scottish throne. Sir William Armstrong lives at Jesmond, just outside Newcastle, and at Elswick, west of the city, are the extensive workshops where are made the Armstrong guns. The great High Level bridge across the Tyne Valley, built by Stephenson, with a railway on top of a roadway, and one thousand three hundred and thirty-seven feet long, is one of the chief engineering works at Newcastle. George Stephenson was born in 1781 at High Street House, Wylam, near Newcastle, while at Frudhoe Castle is a seat of the Duke of Northumberland. At Wallsend, three miles east of Newcastle, begins the celebrated Roman wall that crossed Britain, and was defended by their legions against incursions by the Scots. Its stone-and-turf walls, with the ditch on the north side, can be distinctly traced across the island. HEXHAM.