So great is their disorder that they hinder piety not only in themselves but also in others, and impede the salvation of souls which we so greatly desire." [Footnote 9: Cf. "Wadding," Tom. IV, Anno 1256. No. 23.] The smouldering elements of discord were fanned into flame in the year 1254, and the secular and regular professors came to an open rupture. The matter arose thus. A noisy brawl occurred amongst the students. The civil guard intervened; a riot ensued, and one student was killed and several were wounded. Such encounters were not infrequent, and they resulted in creating a bad spirit between the magistrates and the authorities of the University. The latter sought to exempt the students from civil jurisdiction, whilst the former, in the interests of public order, insisted on subjecting them to it. The occurrence just recorded brought matters to a {20} climax. The University demanded the punishment of the civil guard, the magistrates refused compliance. Thereupon the entire staff of secular professors suspended their lectures and withdrew from the city. The Regulars kept their halls open and continued to teach. This gave great offence to the secular professors, and when the difference between them and the municipal authorities was eventually settled, and they had once more resumed their duties, they did not forget it. Determined to prevent its recurrence, they framed a statute binding the Regulars to act in accordance with the majority of the professors. To this they refused to submit, and in consequence they were forced to abandon their Chairs. They appealed to the Pope who eventually reinstated them and revoked the obnoxious statute.