As a result of charges of graft, inefficiency, and pro-German tendencies directed against the military aircraft administration by Gutzon Borglum, President Wilson, on May 15, asked Charles Evans Hughes to aid Attorney General Gregory in making a thorough investigation. Mr. Hughes accepted the invitation. The President also wrote a letter to Senator Martin denouncing the Chamberlain resolution for an investigation of the conduct of the war by the Committee on Military Affairs of the Senate, and on the same day the Senate Committee on Audit and Expenses, to which the resolution had been referred, ordered a favorable report on it, modifying it so as to provide for a limited inquiry. SUBMARINE BLOCKADE The American steamship Lake Moor was reported sunk on April 11. Forty-four Americans were killed when the Old Dominion liner Tyler was sunk off the French coast on May 2. The British liner Oronsa was sunk on April 28. All on board except three members of the crew were saved. The British sloop Cowslip was torpedoed on April 25. Five officers and one man were missing. The British Admiralty announced on April 24 the cessation of the weekly return of shipping losses and the substitution of a monthly report. In a statement made in the Chamber of Deputies on May 11, Georges Leygues, the French Minister of Marine, declared that the total of allied tonnage sunk by German submarines in five months was 1,648,622, less than half the amount alleged by Germany to have been destroyed. He announced that the number of submarines sunk by the Allies was greater than Germany's output. [Illustration: BARON STEPHAN BURIAN Austro-Hungarian Foreign Minister in succession to Czernin] LEADERS IN THE IRISH CONTROVERSY [Illustration: John Dillon, M. P., _Leader of the Nationalist Party_ (_Press Illustrating Service_)] [Illustration: Joseph Devlin, _Nationalist M. P. for West Belfast_ (_Press Illustrating Service_)] [Illustration: Sir Edward Carson, M. P., _Leader of the Ulster Unionists_ (_Central News_)] [Illustration: Sir Horace Plunkett, _Chairman of the Irish Convention_ (_Bain News Service_)] Twelve German submarines were officially reported captured or sunk in British waters by American or British destroyers during the month of April, and two others were known to have been destroyed. Ten passengers were killed when the French steamship Atlantique was torpedoed in the Mediterranean early in May. The ship managed to reach port. CAMPAIGN IN WESTERN EUROPE April 18--French advance on both banks of the Avre River between Thanne and Mailly-Raineval; Germans deliver terrific assaults upon the British front from Givenchy to the neighborhood of St. Venant. April 19--Italian troops reach France; British beat off assaults on Mont Kemmel and recover ground west of Robecq; bombardment of Paris resumed.