CHAPTER XII. How Sir Pervivale departed secretly from his brother, and how he loosed a knight bound with a chain, and of other doings. CHAPTER XIII. How Sir Percivale met with Sir Ector, and how they fought long, and each had almost slain other. CHAPTER XIV. How by miracle they were both made whole by the coming of the holy vessel of Sangreal. BOOK XII. CHAPTER I. How Sir Launcelot in his madness took a sword and fought with a knight, and leapt in a bed. CHAPTER II. How Sir Lancelot was carried in an horse litter, and how Sir Launcelot rescued Sir Bliant, his host. CHAPTER III. How Sir Launcelot fought against a boar and slew him, and how he was hurt, and brought unto an hermitage. CHAPTER IV. How Sir Launcelot was known by Dame Elaine, and was borne into a chamber and after healed by the Sangreal. CHAPTER V. How Sir Launcelot, after that he was whole and had his mind, he was ashamed, and how that Elaine desired a castle for him. CHAPTER VI. How Sir Launcelot came into the joyous Isle, and there he named himself Le Chevaler Mal Fet. CHAPTER VII. Of a great tourneying in the Joyous Isle, and how Sir Pervivale and Sir Ector came thither, and Sir Percivale fought with him. CHAPTER VIlI. How each of them knew other, and of their great courtesy, and how his brother Sir Ector came unto him, and of their joy. CHAPTER IX. How Sir Bors and Sir Lionel came to King Brandegore, and how Sir Bors took his son Helin le Blank, and of Sir Launcelot. CHAPTER X. How Sir Launcelot with Sir Percivale and Sir Ector came to the court, and of the great joy of him. CHAPTER XI. How La Beale Isoud counselled Sir Tristram to go unto the court, to the great feast of Pentecost. CHAPTER XII. How Sir Tristram departed unarmed and met with Sir Palomides, and how they smote each other, and how Sir Palomides forbare him. CHAPTER XIII. How that Sir Tristram gat him harness of a knight which was hurt, and how he overthrew Sir Palomides. CHAPTER XIV. How Sir Tristram and Sir Palomides fought long together, and after accorded, and how Sir Tristram made him to be christened. BOOK XIII. CHAPTER I. How at the vigil of the Feast of Pentecost entered into the hall before King Arthur a damosel, and desired Sir Launcelot for to come and dub a knight, and how he went with her. CHAPTER II. How the letters were found written in the Siege Perilous and of the marvellous adventure of the sword in a stone. CHAPTER III. How Sir Gawaine assayed to draw out the sword, and how an old man brought in Galahad. CHAPTER IV. How the old man brought Galahad to the Siege Perilous and set him therein, and how all the knights marvelled. CHAPTER V. How King Arthur shewed the stone hoving on the water to Galahad, and how he drew out the sword. CHAPTER VI. How King Arthur had all the knights together for to joust in the meadow beside Camelot or they departed.