"But how would that be any indication that the people here are cannibals?"
"When you see a bone that has on it the unmistakable markings of human teeth, it is pretty safe to infer that the animal which scratched the bone was a cannibal."
From the report of Muro it was evident that there[p. 19] was a large number of people on the island, and, if Muro's observations were correct, they now had some captives, or, at least, were preparing to celebrate a feast in which human beings were to be the victims.
"That satisfies me of one thing," said Harry.
"And what is that?" asked John.
"Why, that there must be other tribes on the island," he answered.
"Why do you infer that?"
"Well, where would they get the victims?"
"From their own people," answered John.
"What! eat their own people?" asked George.