Astounding Stories of Super-Science, August 1930

Kendrick saw indeed. It was simple, so simple! Fool--why hadn't he thought of it? "But your invention will never make you wealthy now, my dear fellow," Cor went on, tauntingly. "You will be our guest, here, until we have taken over your interesting country. After that, if there is any need for the broadcasting of heat, we will furnish it ourselves. We have those facilities, among others, fully developed. Would you care to see our plant?" Kendrick naturally admitted that he would, so the dwarf led him through a rear door and up a winding flight of stairs. They emerged presently into a great laboratory housed in the glass-roofed pinnacle of the tower. There he beheld a sight that left him breathless. Never before had he seen such an assemblage of scientific apparatus. Its vastness and strangeness were fairly overpowering, even to a man as well versed in physio-chemical paraphernalia as he was. Before his eyes could take in a tenth part of the spectacle, Cor had led him to the left wall. "There," he said, "you will observe a development of your heat generator." Kendrick looked--to see a long bank of large vacuum-tubes, each about three feet high and a foot wide, connected by a central shaft that caused series of little vanes in each of them to revolve at lightning speed. Around the apparatus moved numerous small attendants, oiling, wiping, adjusting its many delicate parts. "Well, what do you think now?" asked Cor. Kendrick made no reply, though he was thinking plenty.