The middle of the century was marked by the dissensions between the Kann and Kulp parties. The Kulp party, to which many influential men belonged, endeavored to harmonize the ancient constitution of the community with new measures for the benefit of the people; but their efforts were thwarted by the wealthy Kann family, whose influence was predominant both in the government of the community and among the people. In 1750 the two parties effected a compromise, which was, however, of but short duration. The community was further excited by Jonathan Eybeschütz's amulet controversy. In 1756 the Jews received permission to leave their street in urgent cases on Sundays and feast days for the purpose of fetching a physician or a barber or mailing a letter, but they were required to return by the shortest way. In 1766 the Cleve divorce controversy began to excite the rabbinate of Frankfurt also. At the coronation of Joseph II. the Frankfurt Jews were permitted for the first time to appear in public, when they swore allegiance to the emperor (May 28, 1764). The community of Frankfurt rendered great service in suppressing Eisenmenger's "Entdecktes Judenthum", confiscating all the copies in 1700. Eisenmenger sued the community for 30,000 gulden. Although he lost his case, proceedings were several times renewed with the aid of King Frederick I of Prussia, and only in 1773 was the community finally released from all claims brought by Eisenmenger's heirs.