“Just what I’ve been afraid of, a fire arrow,” Bob told him.
“What do you mean by that?” Rex asked anxiously.
“They’re trying to set fire to the roof by shooting arrows which they have wrapped with birch bark and smeared with pitch. It’s an old Indian trick.”
“But will the roof catch?”
“I’m afraid it will. It’s made of pretty light stuff, I suppose. Most of them are, but let’s hope that this one’s an exception.
“There’s another one,” Jack said a moment later, as a second thud sounded on the roof.
“Is there nothing we can do?” Rex asked.
“Not a thing so far as I can see, except hope and pray that it doesn’t catch,” Bob answered sadly.
“Hark!” Jack whispered, about five minutes later.
“What is it?” Bob asked.