Thus the two men came to compare notes, finding that each had learned practically the same thing. Corrus being denied the right to visit any woman save Cunora, Dulnop hurried to Rolla and told her what he and the herdsman had learned. The three testimonies made an unshakable case. "By the great god Mownoth!" swore Corrus in vast delight when Dulnop had reported. "We have learned a way to make ourselves free! As free as the squirrels!" "Aye," agreed the younger. "We know the method. But--how shall we secure the means?" Corrus gave an impatient gesture. "'Twill come in time, Dulnop, just as the dream came! Meanwhile we must tell every one of our kind, so that all shall be ready when the day comes to strike! "Then"--his voice lost its savagery, and became soft and tender--"then, Dulnop, lad, ye shall have thy Cunora; and as for Rolla and I--" Corrus turned and walked away, that his friend might not see what was in his eyes. IX FOUND! It was two weeks to a day when the four on the earth, after having seen very little of each other in the meanwhile, got together for the purpose of finishing their "revelation" to the Sanusians. "Mr. Van Emmon and I," stated Billie coolly, as they put on their bracelets, "have been trying to decide upon the best way of telling them how to obtain fire." Neither Smith nor the doctor showed that he noticed her "Mr. Van Emmon." Evidently the two were still unreconciled. "I argue," remarked the geologist, "that the simplest method will be a chemical one. There's lots of ways to produce fire spontaneously, with chemicals; and this woman Rolla could do it easily." Billie indulged in a small, superior smile. "He forgets that all these chemical methods require PURE chemicals. And you don't find them pure in the natural state. You've got to have fire to reduce them with." "What's your proposition, then?" from the doctor. "Optics!" enthusiastically. She produced a large magnifying-glass from her pocket. "All we have to do is to show Dulnop--he's something of a mineralogist--how to grind and polish a piece of crystal into this shape!" Van Emmon groaned. "Marvelous! Say, if you knew how infernally hard it is to find even a small piece of crystal, you'd never propose such a thing! Why, it would take years--Mrs. Van Emmon!" Smith also shook his head. "Neither of you has the right idea. The easiest way, under the circumstances, would be an electrical one." He paused, frowning hard; then vetoed his own plan. "Thunder; I'm always speaking first and thinking afterward. I never used to do it," accusingly, "until I got in with you folks. Anyhow, electricity won't do; you've got to have practically pure elements for that, too." "Guess it's up to you, doc," said Billie. And they all looked respectfully toward their host.