His search was unrewarded, however, and at last when Grant returned it was agreed that their only hope was in being recognized by some passing vessel.
The anxiety of the two boys for the safety of their missing comrades was not relieved when later in the afternoon a lake boat changing its course approached the place where they were lying.
Evidently they had been discovered by the captain, who was still holding his glasses in his hand as the boat drew near.
“I found a megaphone under the seat,” suggested Grant.
“Where is it? Go get it,” suggested George.
In a moment Grant was again on deck and handed the megaphone to Mr. Button.
“Ahoy, there!” he called. “Will you give us a tow?”
“Who are you?” came back the answer from the deck of the huge boat.
“There are three of us and our motor-boat broke down last night.”
“How long have you been here?”