James Ian MacPherson announced in the House of Commons on May 9 that a German submarine had recently landed an associate of Sir Roger Casement on the Irish coast, where he was arrested by Government officials, and that he was now in the Tower of London and would be tried by court-martial. A dispatch dated May 15 revealed that two Germans accompanied him, and that all three were imprisoned. All the Sinn Fein leaders, including De Valera and the Countess Markievicz, were arrested in Belfast, Dublin, and other cities, on May 17, as the result of the discovery of treasonable relations with Germany. Lord Lieutenant French issued a proclamation dealing with the situation, calling on all loyalists to aid in blocking the German plans and asking for volunteers to provide Ireland's share of the army. Sir Arthur Roberts, financial adviser to the British Air Minister, resigned on April 24 as a result of a disagreement with Lord Rothermere. The next day Lord Rothermere resigned. He was succeeded by Sir William Weir. Baron Rhondda resigned as Food Controller and Lord Northcliffe resigned as Chairman of London headquarters of the British Mission to the United States and Director of Propaganda in Enemy Countries. Representatives of the allied nations met at Versailles on May 1 and May 2. On May 6 Major Gen. Frederick Barton Maurice, formerly Director General of British Military Operations, addressed a letter to The London Daily Chronicle challenging the statements made in the House of Commons by Premier Lloyd George and Andrew Bonar Law with regard to the military situation and demanding a Parliamentary investigation. On May 7 ex-Premier Asquith moved for an inquiry in Commons. After a speech by Lloyd George in Commons in his own defense, May 9, the House, by a vote of 293 to 106, upheld him and the Government and rejected Mr. Asquith's motion. The Austrian Premier was empowered by Emperor Charles, on May 4, to adjourn Parliament and to inaugurate measures to render impossible the resumption of its activities. A growing resentment against the domination of Austria-Hungary by Germany was manifested by Austria's Slavic peoples. A dispatch from Switzerland dated May 8 told of serious disturbances in the fleet, caused by seamen of Slavic and Italian stock, which resulted in several changes in the high command. A new Hungarian Cabinet, headed by Dr. Wekerle, was formed on May 10. On May 13 Vienna papers published a declaration by the Czech members of the Austrian House of Lords in which an independent State was demanded. As a result of a conference between Emperor William and Emperor Charles at German Headquarters on May 10, Austria-Hungary concluded a new convention with Germany.