Another half-hour passed in acute suspense, Three times the anxious crew heard the terrifying sound of an aerial propeller. Somewhere in the darkness the British hornets were up and searching for their lurking foe--so far without success unless the moral effect be taken into consideration.
Presently the Zeppelin drifted beyond the glare of the fixed searchlights, but not until another twenty minutes had passed did von Loringhoven give orders for the engines to be restarted. At that terrific altitude the noise was considerably diminished in volume. Instead of the explosions of the motors resembling a succession of rifle-shots the sounds were like those of a whip being cracked, yet as the airship descended steadily to a height of five thousand feet the noise resumed its normal and distracti
