“One minute,” said Mr. Skeel in soothing tones, much different from the harsh ones he had almost constantly used in his classes at Elmwood Hall. “What is it you object to?”

“These lads—what are they doing here? Are they spying on me?” and the aged man pointed at Nick and Sam.

“They are my assistants,” said the professor soothingly, and, though he spoke in a low tone, Tom and his chums could hear him. “Without their aid I can not help you,” Mr. Skeel went on, and when the hermit’s back was turned toward him our hidden friends distinctly saw the professor make a signal of caution and of acquiescence toward the two lads, who craftily nodded their understanding.

“Your assistants?” asked the hermit.

“Yes. If you want me to help you I must have them to help me. I would have told you about them, but I did not get the chance until they came so unexpectedly. Had they known that you objected to their presence they would have remained away. But I assure you that you can trust them.”

“Well,” said the hermit, bitterly, “since I have told you part of my secret, and trusted you with it, I suppose your assistants must be in on it. But no more! No more!” and he shook his fist toward the clouds, and glanced around as though he feared more intruders. “There were some other boys around the other day,” the aged man went on, “and if I find them sneaking about my mill it will be the worse for them.”

“Say, we did get away just in time,” whispered Jack.

“That’s right,” agreed Dick.

“But what in the world does Skeel mean by saying he is going to help Wallace, and that Sam and Nick are his assistants, I wonder?” asked Bert.