Chapter 24 THE INVENTOR'S TREACHERY.

Weak almost as a baby, Frank made his way to the stern of the navigating deck, and with what seemed the last ounce of strength in his body he gave the cord a feeble yank.

It resisted and the boy tugged once more.

Still it stuck.

Mustering his strength to keep on his feet a minute longer, the boy tied the cord to his wrist. Then, as he fell