Portions of exploded shells examined in the Municipal Laboratory of Paris indicated that the calibre of the new German gun was a trifle less than nine inches, and that the projectiles, weighing perhaps 200 pounds, contained a comparatively weak charge of high explosives, arranged in two chambers connected by a fuse, often causing two distinct explosions a minute or more apart. It was stated later by German military scientists that it took each shell more than three minutes to travel from the mouth of the gun to Paris, and that on its way it had to rise to a height of more than twenty miles from the earth. Three Paris experts found that at least two of these great guns were being used. According to German prisoners, one of the guns exploded on March 29, killing a German Lieutenant and nine men. In their jubilation over the new weapon the German newspapers stated that the first bombardment of Paris had been witnessed by the Kaiser and by the builder of the long-range gun, Professor Fritz Rausenberger, who is an artillerist, manager of the Krupp Works, and builder of the famous 42-centimeter (16½-inch) gun used to demolish the Belgian forts at the beginning of the war. The violence of the concussion of the new weapon was indicated by the statement of American scientists that every shot was found to be recorded by seismographs all over the United States; in other words, the shock of each discharge caused the needles of earthquake detectors three or four thousand miles away to record small dots on the smoked paper used in these instruments. Paris, though embittered by the new form of attack, refused to be frightened by the long-range shells. The attendance at the churches on Easter Sunday was even larger than usual. The police authorities issued an order on April 4 that theatre matinées and afternoon entertainments of all kinds should be temporarily discontinued; but, owing to numerous protests, this order was modified next day, and the usual daytime performances in the theatres were allowed on condition that the bombardment had not begun at the hour of assembly, and that the place of amusement be evacuated immediately if the shelling began during the performance. In the weeks that followed the bombardment became more and more desultory and ineffectual.