"I know little more than I have told you," said Nern, rather hopelessly. "Our knowledge of your world, your people and your language comes from our listening in on you and observing you without being observed or heard. This might seem like taking an advantage of you, were it not for the fact that we respect confidences, and subjugate all else to science. We have helped you at times, by telepathically suggesting ideas to your thinkers. "We would have given you all our inventions in this way, gladly, but in many instances we were unable to find minds attuned to accept such advanced ideas. We have had the advantage of you because our planet is so many millions of years older than your own." There was a plaintive note in Nern's voice as he talked. * * * * * "But now we are on our knees to you, so to speak. We do not know everything and, desperately, we need the aid of a man of your caliber. In behalf of the distraught people of Venus, I am asking you bluntly to make a great sacrifice. Will you face the dangers of a trip to Venus and use your knowledge to aid us in exterminating these creatures of hell?" There was positive pleading in his voice, and in the eyes of his beautiful sister there were tears. "But what would my superiors in the Government Bureau think?" feebly protested Larner, "I could not explain...." "You have no superiors in your line. Our Government needs you at this time more than any earthly government. Your place here is a fixture. You can always return to it, should you live. We are asking you to face a horrible death with us. You can name your own compensation, but I know you are not interested so much in reward. "Now, honestly, my good professor, there is no advantage to be gained by explanation. Just disappear. In the name of God and in the interests of science and the salvation of a people who are at your mercy, just drop out of sight. Drop out of life on this planet. Come with us. The cause is worthy of the man I believe you to be." "I will go," said Larner, and his hosts waited for no more. An instant later the targo shot out into interstellar space. "How do you know what course to follow?" asked Larner after a reasonable time, when he had recovered from his surprise at the sudden take-off. "We do not need to know. Our machine is tuned to be attracted by the planetary force of Venus alone. We could not go elsewhere. A repulsion ray finds us as we near Venus and protects us against too violent a landing. We will land on Venus like a feather about three months from to-night." The time of the journey through outer space was of little moment save for one incident. Larner and the other travelers were suddenly and rather rudely jostled about the rapidly flying craft. Larner lost his breath but not his speech. "What happened?" he inquired. "We just automatically dodged a meteor," explained Nern. * * * * *