The Norman dukes only deteriorated as rulers when they joined to their domain the crown of England, won by the hardiest and strongest of them all. We remember the passionate, self-willed Robert, son of the Conqueror, and John, called Lackland, that disgrace to the English throne, the worst and likewise the last Norman duke, for the French king, Philippe Auguste, confiscated Normandy, together with other English possessions, and joined it to the crown of France, taking possession of Rouen after a siege in 1204. From this point the history of Rouen becomes the history of a French and not of a Norman town. As a reward for its submission, Philippe Auguste presented the town with a castle, of which one tower (the Tour Jeanne d’Arc) alone remains standing. Two centuries later, Rouen was in danger from the English. Henry V., during his brilliant campaign in northern France, was not likely to leave to itself such an important place. In 1419 he set up his cannon outside the walls, and proceeded to blockade the town, which opened its gates to him after a six months’ siege. Here he also built a castle, which, in the hopefulness born of youth and victory, he intended to use as a royal residence when all France should be at rest under his firm rule. But before the conquest was completed, before he had time to think about any residence other than his camp, came that last fatal sickness at Vincennes, and the castle, which seemed, like all his victories, so sure and so lasting, has been swept off the face of the earth. The years after Henry’s death, however, were significant ones for Rouen, now in English hands, and in 1431 we come to the great point in its history, the trial and burning of Joan of Arc in the market-place. [Illustration: ROUEN FROM THE RIVER]