"This may aid in purchasing your freedom." Walter bowed deeply and murmured some words of thanks, and was then led off by the marshal. After this many of the young nobles of the court jousted on horseback, ran at the ring, and performed other feats of knightly exercise to the great pleasure of the multitude. The marshal on leading Walter away said to him, "You will be captain of the city band to-morrow, and I must therefore tell you what the king purports. He has prepared a surprise for the citizens, and the present show will be different to anything ever before seen in London. Both to show them somewhat of the sieges which are taking place on the borders of France and the Low Countries, in which Sir Walter Manny and many other gallant knights have so greatly distinguished themselves, and as an exercise for the young nobles he has determined that there shall be a castle erected. It will be built of wood, with battlements and towers, with a moat outside. As soon as the lists are over a large number of workmen will commence its erection; the pieces are all sawn and prepared. There will be machines, ladders, and other appliances. The ten champions on either side will fight as knights; you will have a hundred apprentices as men-at-arms, and the court party will have an equal number of young esquires. You, as winner of to-day's tourney, will have the choice of defense or attack. I should advise you to take the defense, since it is easier and requires less knowledge of war, and many of the other party have accompanied their fathers and masters in the field and have seen real sieges carried out." "Can you show me a plan of the castle," Walter said, "if it be not contrary to the rules, in order that I may think over to-night the plan of fighting to-morrow?" "Here it is," the marshal said. "You see the walls are two hundred feet long and twelve feet in height, with a tower at the end and one over the gateway in the center six feet high. There is a drawbridge defended by an outwork of palisades six feet high. The moat will be a dry one, seeing that we have no means of filling it with water, but it will be supposed to be full, and must be crossed on planks or bridges. Two small towers on wheels will be provided, which may be run up to the edge of the moat, and will be as high as the top of the towers." "Surely they cannot make all this before morning?" Walter said.