e are here!"

Jo sprang to his feet.

"What are you talking about, Rosa? What do you mean?"

"Just as I say; he has gone to bring the Indians, and will soon be back,
too."

"How do you know that?"

"Don't ask me, but I _know_ what I say."

This was alarming news, and though Jo suspected his sister based all
upon her dislike of the man, without positive knowledge of the facts,
yet he was impressed with the belief that she had good cause for her
words.

"He may be on the outside, keeping watch," said the youth, after they
had talked over the matter. "Wait till I take a look. If he can't be
found, we'll awake Ned."

Jo crept out of the cavern dreading a hostile shot as he did so, and
made as thorough an examination of the surroundings as was possible. He
saw nothing of the man whom they missed, that individual at that moment
being a quarter of a mile or more away, holding his vehement argument
with Captain Bagley about the advance with the six Iroquois upon the
sleeping fugitives. His invisibility confirmed the young man in his
misgivings as to the treachery of the man.

"I have no doubt Rosa is right," he muttered, as he walked thoughtfully
back toward the cavern. "She was always quick to detect anything like
that, and it is strange that neither Ned nor I had any such thought. The
only thing that troubled us was whether we could convince Lena-Wingo we
did right in leaving the place where he left us. The thought never
entered our heads that there was anything of this kind in the wind."

He had reached the mouth of the cavern again, where his sister was
anxiously waiting him.

"Did you find anything of him?"

"No," he answered, with a shake of the head. "I believe you are right;
the man has gone off somewhere after his promise to keep watch over us
while we slept; that's enough for me. Is Ned awake?"

"Not that I am aware of."

"He must be aroused at once, for it will not do to stay here after what
has taken place."

Jo passed inside and awakened his friend, without pausing to be very
gentle as to the means. It took but a minute to make plain the trouble.
He became as alert and suspicious as they on the instant.

"There!" he exclaimed; "I had a suspicion when he came under the tree
that I had seen him somewhere."

"So had I, but I couldn't recall where and when it was."

"Don't you remember when the battle was going on the other day, we saw
one man among the Tories who was tomahawking the whites as s