He vanished. * * * * * Before the startled men could recover from the shock of it, the vibrant, too-new voice went on: "I am sorry for you, Mundson, because, like you, I need specimens for my experiments. What a splendid specimen you will be!" His laugh was ugly with significance. "Get in, worms!" Unseen hands cuffed and pushed them into the sun-ship. Inside, Dr. Mundson stumbled to the control room, white and drawn of face, his great brain seemingly paralyzed by the catastrophe. "You needn't attempt tricks," went on the voice. "I am watching you both. You cannot even hide your thoughts from me." And thus began the strange continuation of the journey. Not once, in that wild half-hour's rush over the polar ice clouds, did they see Adam. They saw and heard only the weird signs of his presence: a puffing cigar hanging in midair, a glass of water swinging to unseen lips, a ghostly voice hurling threats and insults at them. Once the scientist whispered: "Don't cross him; it is useless. John Northwood, you'll have to fight a demigod for your woman!" Because of the terrific speed of the sun-ship, Northwood could distinguish nothing of the topographical details below. At the end of half-an-hour, the scientist slowed enough to point out a tall range of snow-covered mountains, over which hovered a play of colored lights like the _aurora australis_. "Behind those mountains," he said, "is our destination." * * * * * Almost in a moment, the sun-ship had soared over the peaks. Dr. Mundson kept the speed low enough for Northwood to see the splendid view below. In the giant cup formed by the encircling mountain range was a green valley of tropical luxuriance. Stretches of dense forest swept half up the mountains and filled the valley cup with tangled verdure. In the center, surrounded by a broad field and a narrow ring of woods, towered a group of buildings. From the largest, which was circular, came the auroralike radiance that formed an umbrella of light over the entire valley. "Do I guess right," said Northwood, "that the light is responsible for this oasis in the ice?" "Yes," said Dr. Mundson. "In your American slang, it is canned sunshine containing an overabundance of certain rays, especially the Life Ray, which I have isolated." He smiled proudly. "You needn't look startled, my friend. Some of the most common things store sunlight. On very dark nights, if you have sharp eyes, you can see the radiance given off by certain flowers, which many naturalists say is trapped sunshine. The familiar nasturtium and the marigold opened for me the way to hold sunshine against the long polar night, for they taught me how to apply the Einstein theory of bent light. Stated simply, during the polar night, when the sun is hidden over the rim of the world, we steal some of his rays; during the polar day we concentrate the light."