The two boys were completely cleared of the slightest shade of suspicion of the outrage, and there was even an interview with the English detective in which he admitted that he was wrong.
A week later the Porpoise tied up at her own dock, whence she was launched.
"Back again," remarked the professor as he stepped ashore. "I've been to the south pole, and to the north pole. I wonder where I shall go next?"
"To the big hole and underground," suggested Jack.
"We shall see," said Mr. Henderson with a twinkle in his eyes.
THE END
The Dave Dashaway
Series
By ROY ROCKWOOD
Author of the "Speedwell Boys Series" and the "Great Marvel Series."
12mo. Illustrated. Price per volume, 60 cents, postpaid.