May 28--Experts estimate that orders amounting to $16,000,000 have
been placed in the United States for aeroplanes for the Allies.

May 29--Austrian aeroplane squadron drops bombs on Venice, causing
several fires; a French and a German aeroplane fight a duel at 9,000
feet near Fismes, the French machine, by its gunfire, shooting down
the German from a height of 6,000 feet.

May 30--A Zeppelin drops bombs on Helsingfors, destroying cotton sheds
and setting fire to a passenger ship; British bring down a German
aeroplane near Courtrai; Turkish aviators drop bombs on the allied
trenches at Sedd-el-Bahr.

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 Luneville; 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