le of white
marble to mark the site of the royal tower that once stood where the
south-west corner of the Louvre courtyard is now.

The walls of Rouen's donjon are 4 metres 20 thick, 46 metres in
circumference at the base, and 30 metres high. These last two
measurements show a difference of only two metres from those of the
vanished Tour du Louvre. Before this chapter closes I shall be able to
explain how it is that you are able to see in Rouen the most perfect
presentment of a thirteenth-century donjon in France, with two-thirds
of the present building in its original masonry. Within it took place
most of the stirring events of history after a change in dynasty had
left the castle of the Norman dukes to develop gradually into a
commercial instead of a royal or military centre. One of these, the
arrest of Charles le Mauvais, and the execution of his four friends by
King Jean le Bon, I have spoken of in earlier chapters. This, too, was
the fortress that held out longest for the King when the Revolte de la
Harelle was at its height in 1382. Before its walls Sir Gilbert Talbot
and Sir William Hanington sat down to besiege Guy le Bouteiller, who
as captain of the garrison had it in his especial charge. Within it
the eighty hostages for the ransom of the city, and the thirty
burgesses especially punished with high fines, were imprisoned when
King Henry V. took the town. It was still held by the English garrison
when Jeanne d'Arc was brought to Rouen as a prisoner. It is the last
visible relic of the royal homes of Rouen, for every other one has
disappeared, from the first keep of Rollo to the Haute et Basse
Vieilles Tours of his descendants, to the Palace of Philip Augustus
and of the English kings, even to the fortresses of St. Catherine's
Hill and of the barbacan beside the bridge.

[Illustration: MAP F.

PLAN OF THE VIEUX-MARCHE AND OF THE MARCHE AUX VEAUX, FROM THE "LIVRE
DES FONTAINES DE ROUEN," DRAWN BY JACQUES LELIEUR IN 1525]

Once his prisoner was safe within the castle, the Bishop of Beauvais
proceeded to "pack his jury," and choose his companions for the trial.
His right hand man was Jean d'Estivet (or "Benedicite"). From Paris
arrived Jean Beaupere, who took Gerson's place as Chancellor, with
Jacques de Touraine, Nicole Midi, and Thomas de Courcelles, all
brilliant and authoritative theologians. From Normandy itself came the
Prior of Longueville, the Abbe of Jumieges, Gilles, Abbe of Fecamp and
councillor to