"That's funny," remarked the other girl, and Frank looked at her curiously.

"Why do you say that?" he asked.

"Was it anything like this?" she continued, stooping down and picking some object out of a pile of bricks that stood in front of a tall office building that was being erected, and which was to be Columbia's "sky-scraper" when finished.

And Frank held his breath when he saw that the girl actually held in her hand a torn piece of green burlap similar to that which had been around the missing boat!

CHAPTER VI

THE WORK OF THE TRAINER

"Is that what they call burlap?" asked Frank, as he took hold of the coarse stuff, and examined it.

"Yes, for we have some of it at home, on the wall of a den," replied Minnie.

"Isn't there some sort of printing on it, Frank?" inquired Helen, eagerly.

"I was just looking at it. As sure as you live I can make out most of the word Canton. And that's where our new racing boat was coming from!" exclaimed the boy, a light beginning to show upon his face as he stared at the two pleased girls.