The light flashed aloft; and there, so far above the _Queen Mary_ as to
be little more than a tiny speck, hovered a giant Zeppelin; and even as
they looked, the airship came lower.

"She's sighted us," said Captain Raleigh to his first officer, who
stood beside him. "Try a shot, Mr. Harrison."

The first officer passed the word and a second later there came the
sound of the anti-aircraft gun. The gunner had taken his range at the
moment the flashlight revealed the airship.

The shot brought no noticeable result.

"Fifteen knots ahead, Mr. Harrison!" ordered the captain.

He was afraid that the Zeppelin might drop a bomb on the ship; and from
that moment until the end of the battle the _Queen Mary_ did not pause.
First she headed to port and then to starboard, manoeuvering rapidly
that the German airmen might not be able to reach her with a bomb.

"Another shot!" commanded Captain Raleigh.

Still no result.

"Funny she doesn't rise and try and escape," said Frank.

"No, it's not," returned Jack. "They don't know anything about this new
anti-aircraft gun. They believe they are out of range."