An Act passed in 1549 (Edward VI), forbidding the use in churches of any book of prayers except the Book of Common Prayer approved by the Parliament then sitting, and known as Edward VI’s First Prayer Book. Certain alterations having been made in the book, a further Act was passed in 1552, substituting the new version for the First Prayer Book. The use of this book having been abolished during Mary’s reign, it was again made obligatory by an Act of Queen Elizabeth in 1559, and made to apply to Ireland, while the same course was pursued after the Restoration in 1662, with the additional proviso that no clergyman might hold a living who was not ordained by a bishop and prepared to accept the Prayer Book. Unigenitus, Bull. A Bull issued by Innocent X in 1653, in condemnation of the Jansenist heresy. Union Catholique. A union of the League with the less bigoted Catholics of France, formed in 1588 on the virtual acceptance by Henri III of the League formulas. Union Cellar. An underground cellar in the High Street, Edinburgh, where the principal supporters of the union with England held secret meetings, the feeling against the union being so strong that they dared not meet openly. Union de la France Chrétienne. A union formed in 1891 to hinder the movement for adhesion to the Republic on the part of the Catholic party. Its leaders were M. de Chesnelong, the Comte de Mun, and the Baron de Mackau. Union of Calmar. By this instrument, promulgated in 1397 by Margaret of Denmark, the three northern kingdoms of Norway, Sweden and Denmark were united into one monarchy. It was renounced by Sweden in 1523. Union Jack. The union flag, when hoisted at the jackstaff of a man-of-war, is so called. The union flag is composed of the red cross of St. George on a white ground (England), the white saltire of St. Andrew on a blue ground (Scotland), and the red saltire of St. Patrick on a white ground (Ireland). Union with Ireland. The Act of Union with Ireland was finally passed in 1800. Resolutions in favour of it had been submitted to the Irish Parliament in 1799, and though supported in the main by the Irish Catholics, they were opposed by Grattan, Curran and other Irish leaders, and rejected. Pitt was determined that in the interests of both countries the union must take place, and, the Irish Parliament having been dissolved, he succeeded by unlimited bribery in securing a Parliament containing a majority pledged to vote for the union. This Parliament met in 1800, and the necessary resolution was passed by a majority of forty-six. Union with Scotland.