It shall ensure that these rules are published. ARTICLE 132 The Commission shall act by a majority of the number of members provided for in Article 126. A meeting of the Commission shall be valid only if the number of members laid down in its rules of procedure is present." 9) Article 133 shall be repealed. 10) Article 137 shall be replaced by the following: "ARTICLE 137 The Court of Justice shall consist of thirteen Judges. The Court of Justice shall sit in plenary session. It may, however, form Chambers, each consisting of three or five Judges, either to undertake certain preparatory inquiries or to adjudicate on particular categories of cases in accordance with the rules laid down for these purposes. The Court of Justice shall Sit in plenary session when a Member State or a Community institution that is a party to the proceedings so requests. Should the Court of Justice so request, the Council may, acting unanimously, increase the number of Judges and make the necessary adjustments to the second and third paragraphs of this Article 139." 11) Article 140a shall be replaced by the following: "ARTICLE 140a 1. A Court of First Instance shall be attached to the Court of Justice with jurisdiction to hear and determine at first instance, subject to a right of appeal to the Court of Justice on points of law only and in accordance with the conditions laid down by the Statute, certain classes of action or proceeding defined in accordance with the conditions laid down in paragraph 2. The Court of First Instance shall not be competent to hear and determine questions referred for a preliminary ruling under Article 150. 2. At the request of the Court of Justice and after consulting the European Parliament and the Commission, the Council, acting unanimously, shall determine the classes of action or proceeding referred to in paragraph 1 and the composition of the Court of First Instance and shall adopt the necessary adjustments and additional provisions to the Statute of the Court of Justice. Unless the Council decides otherwise, the provisions of this Treaty relating to the Court of Justice, in particular the provisions of the Protocol on the Statute of the Court of Justice, shall apply to the Court of the First Instance. 3. The members of the Court of First Instance shall be chosen from persons whose independence is beyond doubt and who possess the ability required for appointment to judicial office; they shall be appointed by common accord of the governments of the Member States for a term of six years. The membership shall be partially renewed every three years. Retiring members shall be eligible for re- appointment. 4. The Court of First Instance shall establish its rules of procedure in agreement with the Court of Justice. Those rules shall require the unanimous approval of the Council." 12) Article 143 shall be replaced by the following: "ARTICLE 143 1. If the Court of Justice finds that a Member State has failed to fulfil an