Of these three great conflicts between townsmen and scholars the first occurred in 1214. This was ended by a compromise brought about by the Bishop of Tusculum, the Papal Legate, the King granting jurisdiction to the University in all cases where one of the parties was a scholar or a scholar's servant. The second tumult, which took place in 1290, induced the King to confer upon the University the custody of the peace, the custody of the assize of victuals, and the supervision of weights and measures jointly with the Mayor, who had hitherto borne full sway in matters of police. The third battle was in 1357. This was the famous riot of St. Scholastica's day--_satis periculosa_--which resulted in the excommunication of the Mayor, while he and the commonalty of the town of Oxford were laid under an interdict by John, Bishop of Lincoln. The Mayor, who was a vintner and drawn into the quarrel through it having arisen in his tavern, is stated in one account to have been originally in the service of the University--protected by the Privilege--and this, of course, was regarded as an aggravation of his offence. The end of it was that the rights before mentioned were confirmed with certain extensions--namely, the supervision of the pavement, and the custody of the peace as well between laics as scholars, while the Mayor was excluded from the custody of the peace between scholars. As a species of penance the Mayor and his fellows were enjoined by the Bishop of Lincoln to attend an anniversary mass at St. Mary's on St. Scholastica's Day; and the scholars were forbidden, on pain of a long term of imprisonment, to inflict on any layman of the town, whilst on his way to the church, during the celebration of the mass, or in the course of his return, any injury or violence, lest he should be deterred from the observance of the duty. This caution was proclaimed through the schools year by year on the "legible day" immediately preceding the festival. Good relations were hard to restore, and as long after as 1432 the authorities were reduced to publishing the following edict in the hope of abating the scandal: