The activity of these conferences, or conventions, passed, by gradual expansion, from the judicial sphere into that of administration and legislation. At these conventions laws were adopted determining the order of Kahal elections, fixing the competency of the rabbis and judges, granting permits for publishing books, and so forth. Occasionally these assemblies of Jewish notables endorsed by their authority the enactments of the Polish Government. Thus, in 1580, the representatives of the Polish-Jewish communities, who assembled in Lublin, gave their solemn sanction to the well-known Polish law barring the Jews of the Crown, of Poland proper, from farming state taxes and other public revenues, in view of the fact that "certain people, thirsting for gain and wealth, to be obtained from extensive leases, might thereby expose the community to great danger." Towards the end of the sixteenth century the fair conferences received a firmer organization. They were attended by the rabbis and Kahal representatives of the following provinces: Great Poland (the leading community being that of Posen), Little Poland (Cracow and Lublin), Red Russia (Lemberg), Volhynia (Ostrog and Kremenetz), and Lithuania (Brest and Grodno). Originally the name of the assembly varied with the number of provinces represented in it, and it was designated as the Council of the Three, or the Four, or the Five, Lands. Subsequently, when Lithuania withdrew from the Polish Kahal organization, establishing a federation of its own, and the four provinces of the Crown[69] began to send their delegates regularly to these conferences, the name of the assembly was ultimately fixed as "the Council of the Four Lands" (_Waad Arba Aratzoth_). The "Council" was made up of several leading rabbis of Poland,[70] and of one delegate for each of the principal Kahals selected from among their elders--the number of the conferees altogether amounting to about thirty. They met periodically, once or twice a year, in Lublin and Yaroslav (Galicia) alternately. As a rule, the Council assembled in Lublin in early spring, between Purim and Passover, and in Yaroslav at the end of the summer, before the high holidays.