designate Tom's motor-boat) walked down toward the dock where it was moored the young inventor gave a startled cry.
"What's the matter?" asked Mr. Hastings.
"That man! See him at my motor-boat?" criect Tom. He pointed to the craft in the lake. A man was in the cockpit and seemed to be doing something to the forward bulkhead, which closed off the compartment holding the gasoline tank.
"Who is he?" asked Mr. Hastings, while Tom started on a run toward the boat.
"I don't know. Some man who bid on the boat at the auction, but who didn't go high enough," answered the lad. As he neared the craft the man sprang out, ran along the lake shore for a short distance and then disappeared amid the bushes which bordered the estate of Mr. Hastings. Tom hurriedly entered the Arrow.
"Did he do any damage?" asked Mr. Hastings.
"I guess he didn't have time," responded Tom. "But he was tampering with the lock on the door of the forward compartment. What's in there?"
"Nothing but the gasoline tank. I keep the bulkhead sliding door locked on general principles, I can't imagine what the fellow would want to open it for. There's nothing of value in there. Perhaps he isn't right in his head. Was he a tramp?"
