the Sacraments: president Cardinal Benedetto Aloisi Masella; Commission for the Discipline of the Clergy and the Christian People: president Cardinal Pietro Ciriaci; Commission for Religious: president Cardinal Ildebrando Antoniutti; Commission on the Sacred Liturgy: president Cardinal Arcadio Larraona; Commission for the Missions: president Cardinal Gregorio Pietro XV Agagianian; Commission on Seminaries, Studies, and Catholic Education: president Cardinal Giuseppe Pizzardo; Commission for the Lay Apostolate and for the Media: president Cardinal Fernando Cento. Each commission included 25 Council Fathers (16 elected by the council and 9 appointed by the Pope) as well as consultors (official periti appointed by the pope). In addition, the Secretariat for Promoting Christian Unity, appointed during the preparatory period, continued to exist under its president Cardinal Augustin Bea throughout the 4 years of the council, with the same powers as a commission. The commissions were tasked with revising the schemas as Council Fathers submitted amendments. They met in the afternoons or evenings. Procedure was more informal than in the general assemblies: there was spontaneous debate, sometimes heated, and Latin was not the only language used. Like the General Congregations, they were closed to the public and subject to the same rules of secrecy. Official Periti (§9-10). These experts in theology, canon law and other areas were appointed by the Pope to advise the Council Fathers, and were assigned as consultors to the commissions, where they played an important part in re-writing the Council documents. At the beginning of the Council, there were 224 official periti, but their number would eventually rise to 480. They could attend the debates in the General Congregations, but could not speak. The theologians who had been silenced during the 1940s and 1950s, such as Yves Congar and Henri de Lubac, and some theologians who were under suspicion in Roman circles at the beginning of the 1960s, such as Karl Rahner and Hans Küng, were appointed periti because of their expertise. Their appointment served to vindicate their ideas and gave them a platform from which they could work to further their views. Private Periti (§11). Each bishop was allowed to bring along a personal theological adviser of his choice. Known as “private periti”, they were not official Council participants and could not attend General Congregations or commission meetings. But like the official periti, they gave informal talks to groups of bishops, bringing them up to date on developments in their particular area of