"Go away from here at once!" he commanded. "This is private property, and you are liable to arrest for trespassing. Don't let me catch you here again. Go, I say!"

The man's tone was so menacing, and he spoke with such authority that, for a moment, Frank was frightened. Then he began to realize that he had no right where he was.

With another glance at the patient, whose face had so startled him, Frank turned and went back into the woods. The march of the unfortunate one was resumed, and the keepers, seeing there was no further trouble, resumed their places. The one who had warned Frank remained for a few minutes, gazing at the spot in the woods where the boy had disappeared.

"Guess I can't stay there to-night," Frank murmured as he made off through the fast-darkening forest. "I wonder what I had better do?"

He paused and, through the trees caught sight of something that gave him hope. It was a big haystack in a little clearing, some distance from the sanitarium.

"There's my hotel for the night," Frank remarked, as he made his way toward it. In a little while he had burrowed down under the dried grass, and, trying to forget that he was hungry, he prepared to pass the night.

CHAPTER XVII
AN UNEXPECTED MEETING

The three chums, starting on their search for Frank, soon found the telephone line.

"Now we're here, the next question is: Which way are we to go?" asked Bart. "It's all guess work."

"Not exactly," spoke Ned, and he used the same reasoning that Frank had, in deciding to follow the line as it led in the opposite direction from that of Darewell. "That's probably the way Frank would go," concluded Ned, pointing to the right, "and that's the way we want to go."