"I'm glad that's over with," said Andy, when they were safely off the ground, and the shouts of Rockford's enthusiastic population began to grow fainter in the distance.

"Same here," echoed Frank, "you never know what will happen when a crowd is pushing all around you, every fellow eager to just say he had hold of a flying machine. There's always one or two of the lot ready to hang on and risk their lives just to see how it feels to be carried up on an aeroplane. They're the kind I'm most afraid of."

"Well, did you get Police Headquarters in Bloomsbury, Frank?"

"No trouble about that; and our old friend, Officer Green, was in charge during the absence of the Chief," the other Bird boy answered.

"Anything new developed since we left?" asked Andy.

"Just one thing, and Joe thought it meant a whole lot," Frank went on to say.

"Which was what?" inquired the other.

"A man came hurrying in and told how he had seen a flying machine containing two parties just after daybreak, and making directly toward the southwest, Andy. What do you think of that now for news?"

His cousin gave a whistle.

"Whew! important, if true!" he vouchsafed, tersely.