had they been passing through a thick forest. Still it was not pleasant to lose the path, and stumble over stones and stumps, and of course it made the journey longer. They must have walked at least seven or eight miles on their way back before they finally reached their own lake at midnight, at the point where they expected to find Jim waiting for them.
Neither Jim nor the boat was there. He had waited until ten o'clock, and then, making up his mind that they had decided to spend the night at Schroon, he rowed back to the island, and went calmly to bed. An hour later a dense fog settled over the lake; and when the tired boys reached the shore they could see but a few yards in front of their eyes.
It was a terrible disappointment, but Harry tried to be cheerful. "We shall have to stay here to-night, boys," said he; "but we will build a good fire and keep warm." Tom said that he thought that was the best thing to do, for without a fire they would suffer severely from the cold, wet fog, and he
