Descending again to the banks of the Trent, we come to the causeway which carries over the flat meadows the Great North Road, the Roman military route to the north of England, which made it necessary to build a castle to hold the keys to its passage across the river. We are told that Egbert built the earliest fortress here, but the Danes destroyed it. Leofric, Earl of Mercia, rebuilt it, and gave the castle the name of the "New Work." But it too fell into decay, and in 1123 the present castle was built, which though much altered and afterwards sadly ruined, has come down to the present time. It was here that, after his army was swamped in the Wash, King John died, some say by poison, but the prosaic historian attributes the sad result to over-indulgence in "unripe peaches and new beer." In the Civil War it was a royal stronghold and sent King Charles large numbers of recruits. Then it was besieged by Cromwell, but stoutly resisted, and Prince Rupert by some brilliant manoeuvres relieved it. Finally, the king sought refuge within its walls after the defeat at Naseby, and here he was besieged by the Scotch until his voluntary surrender to them at Southwell, when two days afterwards, by his order, Newark capitulated to his captors. The Parliamentary forces afterwards dismantled the castle, and it fell into decay, but it has recently been restored as well as possible, and the site converted into a public garden. Within the town of Newark are several objects of interest. At the Saracen's Head Inn, which has existed from the time of Edward III., Sir Walter Scott tells us that Jeanie Deans slept on her journey from Midlothian to London. The most striking part of the town is the market-square, which is very large, and is surrounded by old and interesting houses, several of them projecting completely over the footwalks, and having the front walls supported upon columns--a most picturesque arrangement. One of these old houses has windows in continuous rows in the upper stories, having between them wooden beams and figures moulded in plaster. Through the openings between these old houses can be seen the church, which is one of the finest parish churches in this district, so celebrated for the magnificence of its religious houses. Surmounting its Early English tower is a spire of later date. The plan is cruciform, but with very short transepts, not extending beyond the aisles, which are wide and stretch the entire length of the church. There is a fine roof of carved oak, and some of the stained glass and interior paintings are highly prized. It was at Newark that Thomas Magnus lived and founded the grammar-school at which the antiquarian Dr. Stukeley was educated, and afterwards the famous Warburton, who became Bishop of Gloucester. [Illustration: NEWARK CASTLE AND DUNGEON.]