May 31--Zeppelins drop ninety incendiary bombs on London in a night raid; four civilians are killed and several others wounded; numerous fires are started, but none prove serious; Berlin announces that the attack is a reprisal for the aerial attack on Ludwigshafen; Italian dirigible makes a raid on the Austrian naval base of Pola, damaging the railroad station and arsenal. June 2--Germans shoot down a British aeroplane at Bixschoote. June 3--Twenty-nine French aeroplanes aim 178 shells and several thousand darts at the headquarters of the German Crown Prince, killing several soldiers. June 4--Zeppelins drop bombs on the east and southeast coasts of England; little damage is done and casualties are few. June 5--A Taube drops bombs on Calais, killing one person and doing slight property damage. June 6--Ten Zeppelins of a new type are reported from Copenhagen to have been completed, these machines having greater speed than the old ships; they are stated to be fitted with appliances for dropping poisonous gas bombs; German aeroplanes drop bombs on Calais and on the aviation grounds at Lunéville; a Zeppelin drops bombs on the east coast of England, five persons being killed and forty injured. June 7--Sub-Lieutenant Warneford of the British Flying Corps fights a duel with a Zeppelin at a height of 6,000 feet; with incendiary bombs he explodes the airship, which falls near Ghent, the twenty-eight men on board being killed; Warneford returns safely to the British lines; Italian dirigible bombards Pola. June 8--King George sends a warmly congratulatory telegram to Sub-Lieutenant Warneford and confers upon him the Victoria Cross; Austrian aeroplane bombards Venice; Austrian aeroplane destroys an Italian airship. June 12--Austrian aeroplanes drop bombs on the breakwater of Bari, on Polignano, where a woman is killed, and on Monopoli. June 13--Italian airship seriously damages the arsenal at the naval station of Pola. June 15--Twenty-three allied aeroplanes bombard the town of Karlsruhe, killing eleven and injuring six civilians. AUSTRIA-HUNGARY. May 23--Emperor Francis Joseph, in a manifesto to his troops, denounces Italy, and declares that his former ally's perfidy has no parallel in history. May 25--The Foreign Ministry publishes documents presenting Austria's side of the controversy with Italy; it is contended that Italy, from the beginning, sought to evade her obligations by artificial interpretation of the Triple Alliance treaty. BELGIUM. May 24--The German Government has published a "White Book" charging Belgian civilians with many forms of attacks on German troops; German measures at Louvain and elsewhere are declared to have been only for the purpose of stopping these attacks.