"About a week, I should say," replied the A.P. "At any rate, if it isn't I think I can reasonably apply for an extension of leave."

It was after nine when the two officers arrived at Barborough. Here they found that the next train on to Tarleigh would not leave for another hour and a half.

"There's no particular hurry," remarked Billy. "But, all the same, I don't see why we should cool our heels in this draughty show. I vote we walk."

He could not help wondering why his father had not been waiting for him on the platform. Perhaps he was even now on his way with the car—that wretched magneto ought to be repaired by this time.

"I'm on," assented the A.P. "How about our gear? We can't lug it those five or six miles."

"Hanged if I haven't overlooked that problem," said Barcroft. "Let's take a taxi."

The taxi deposited the two chums at the door of Ladybird Fold at precisely the same moment that a telegraph boy was delivering a couple of telegrams.

"You did look awfully surprised to see us, mother," remarked Billy after the preliminary exchange of greetings. "This is my great pal, Kirkwood—Billy Kirkwood. You've heard me mention him many a time."

"Of course we are delighted to see you, Mr. Kirkwood," said Mrs. Barcroft. "It is, as Billy says, a surprise."

"But didn't you get my wire?" asked the flight-sub.