Produced by Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net communication BY CHARLES FONTENAY _Everyone knows that Earth's the third planet from the sun. But how about looking at it from an alien point of view?_ [Transcriber's Note: This etext was produced from Worlds of If Science Fiction, October 1956. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] The first terrestrial expedition to Mars didn't find any Martians. Neither did the second. Since there are so few Martians left, those facts are less surprising than that the third did. For many years before space flight was accomplished, there had been discussions and theories about how to communicate with Martians, if any existed. But, of course, nobody was ready when the time came. They fell back on that antiquated gimmick. * * * * * Von Frisch, Riley and Smith watched the half dozen Martians approach, and their watching was not without some trepidation. Except that they were about twenty miles away from their G-boat--the planetary landing craft--they probably would have fled. Except that they had their orders, they probably would have shot first and asked questions later. "Sir, this is Von Frisch," said the engineer into the microphone of his helmet. He was a little breathless about it. "We're being approached by Martians!" "How do they act?" asked Captains Powers back at the G-boat, immediately. "They don't act hostile, sir." "Stand by, then, but don't take any chances. What do they look like?" "They're quite a bit taller than we are, but their bodies are round and not much bigger than a child's. They've got real long legs and arms, and big heads with big eyes and ears." "Are they intelligent? Are they civilized? How do they breathe?" "Wait a minute, Captain," protested Von Frisch. "You're going a little too fast, sir. They've just come up to us. I don't know whether that's fur on them or whether they're wearing clothes." "Well, try to communicate with them, man!" exclaimed Powers excitedly. Von Frisch did his best. The Martians appeared friendly enough, and interested. Von Frisch tried to communicate in the only method he had heard about. While his companions watched curiously, he shut his ears to the running fire of questions from Powers, squatted and drew a right angled triangle in the red desert sand. By one of the sides he drew three marks, by another four. Then he stepped back and looked questioningly at the Martians. One of the Martians squatted in a tangle of pipestem arms and legs, and with a long finger drew five lines beside the triangle's hypotenuse. "They understand the Pythagorean theorem, sir!" exclaimed Von Frisch.