"What is it, then?" asked Tom.
"Perhaps it's water," said Joe. "I always thought that where there was smoke there must be fire; but Harry says it isn't fire."
"I mean," continued Harry, "that we didn't leave fire enough to make so much smoke. It must have spread and caught something."
"Caught the tent, most likely," said Tom. "Let's row back right away and put it out."
"What's the use?" interrupted Jim. "That tent is as dry as tinder, and will burn up before we can get half-way there."
"We must get back as soon as we can," cried Harry. "All our things are in the tent. Row your best, boys, and we may save them yet."
The boat was quickly turned, and headed toward the camp. The fire was rapidly increasing, and it was apparent that the dry underbrush must have caught; in which case the fire would soon fasten on the trees, and sweep over the whole of the little island.
