Article 368 has been amended by the 24th and 42nd Amendments in 1971 and 1976 respectively. The following is the full text of Article 368 of the Constitution, which governs constitutional amendments. New clauses 368 (1) and 368 (3) were added by the 24th Amendment in 1971, which also added a new clause (4) in article 13 which reads, "Nothing in this article shall apply to any amendment of this Constitution made under article 368." The provisions in "italics" were inserted by the 42nd Amendment but were later declared unconstitutional by the Supreme Court in "Minerva Mills v. Union of India" in 1980. After the 24th amendment, Article 4(2), etc. of the constitution are superseded/made void by article 368 (1) which is the only procedure for amending the constitution however marginal may be the nature of the amendment. The Supreme court ruled that the constituent power under article 368 must be exercised by the Parliament in the prescribed manner and cannot be exercised under the legislative powers of the Parliament. As per the procedure laid out by article 368 for amendment of the Constitution, an amendment can be initiated only by the introduction of a Bill in either House of Parliament. The Bill must then be passed in each House by a majority of the total membership of that House and by a majority of not less than two-thirds of the members of that House present and voting. There is no provision for a joint sitting in case of disagreement between the two Houses. Total membership in this context has been defined to mean the total number of members comprising the House irrespective of any vacancies or absentees on any account vide Explanation to Rule 159 of the Rules of Procedure and Conduct of Business in Lok Sabha. The Bill, passed by the required majority, is then presented to the President who shall give his assent to the Bill. If the amendment seeks to make any change in any of the provisions mentioned in the proviso to article 368, it must be ratified by the Legislatures of not less than one-half of the States. These provisions relate to certain matters concerning the federal structure or of common interest to both the Union and the States viz., the election of the President (articles 54 and 55); the extent of the executive power of the Union and the States (articles 73 and 162); the High Courts for Union territories (article 241); The Union Judiciary and the High Courts in the States (Chapter IV of Part V and Chapter V of Part VI); the distribution of legislative powers between the Union and the States (Chapter I of Part XI and Seventh Schedule); the representation of States in Parliament; and the provision for amendment of the Constitution laid down in article 368.