"What was wrong?"

"Why, I don't know as I'd want to commit myself in too offhand a way," replied Hal, slowly, as though thinking.

"What appeared to be at the bottom of the trouble?"

"Why, it may have been that one of the naval machinists, not understanding our engines any too well, allowed one of the pistons to get overheated, and then resorted to filing," Hal replied.

"What? Overheat a piston, and then try to correct it with a file!" cried young Somers, disgustedly. "The crazy blacksmith! He ought to be set to shoeing snails—that's all he's fit for."

"It looks that way," Hal assented, smiling.

Artful, clever Hal! He had carried it all off so coolly and naturally that Sam Truax, who had been closely studying Hastings's face from the background, was wholly deceived.

"This fellow, Hastings, isn't as smart as I had thought him," muttered
Truax, to himself.

The interrupted cruise now proceeded, the parent vessel signaling for a temporary speed of sixteen knots in order to make up for lost time.

Twenty minutes later came the signal from the "Hudson:"