"I am here to take you along," assured Scudmore.
"But we cannot go till we have done our best to rescue Professor Scotch and Walter Clyde."
"Roight, me lad."
They then explained to Scudmore what had happened to the professor and the boy.
"If my gas generator is all right, so I can inflate the Eagle to its full extent, I shall be able to take four persons with me," said the tall professor. "While you are doing your best to rescue the captives, I will remain here and try to put the ship in condition to sail at short notice."
He seemed perfectly sane, and there was nothing to do but to trust him, and so this plan was agreed to by the boys.
Old Solitary kept in the background, saying nothing.
When everything was arranged, Frank and Barney left the professor, and once more followed the strange man of the canyon on their way to the village of the Danites.
They urged Old Solitary to lose no time, for they were eager to do their best in the effort to save Professor Scotch and Walter Clyde and get away from the canyon.
It was not long before they drew near the pocket, and they advanced with great caution, although it was not thought absolutely necessary, as there was not one chance in a hundred that the Danites would expect them to make such an audacious attempt.