Professor Zepplin nodded his head.

"Eagle-eye, will you come here, please?" called Tad.

The Shawnee, who had been pottering about the camp-fire, strode over
to them with his almost noiseless tread, and squatted on the ground
near the breakfast table.

"There was somebody here last night, Eagle-eye," Tad informed him in
an impressive voice.

The Shawnee nodded.

"Of course, you not having been here, you knew nothing about it, but
to-night you'd better sleep with one eye open.

"Joe Hawk know," answered the Indian.

"Know what?" demanded the Professor sharply.

"Know Indian come last night," was the startling announcement.

"What's that? What's that, Eagle-eye? You mean yourself, I presume.
You mean you came back. But that is not the point--"

The Indian shook his head with emphasis.

"Other Indian come."