 Why is Acoustix so valuable?
[Transcriber's Note: This etext was produced from Planet Stories Spring 1945. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] We had left the offices of Interstellar Voice three days ago, Earth time, and now as the immense disc of Jupiter flamed across the sky, entered the outer limits of the Baldric. If my calculations are right, we've hit it at its narrowest spot." He could be excused this time, however, for this was only our third day on Jupiter's Eighth Moon, and the country was still strange to us. Blood-and-thunder as these books are, however, they have one redeeming feature—authenticity of background. "However, as you perhaps know, the only reason for colonial activities here at all is because of the presence of an ore known as Acoustix. It's no use to the people of Earth but of untold value on Mars. Then it was found that this ore, Acoustix, revitalized their sounding apparatus, and the rush was on." "But up until now this moon is the only place where it can be found. So now here we were at the outer reaches of the Baldric, four travelers on foot with only the barest necessities in the way of equipment and supplies. Above us, the great disc of Jupiter began to descend toward the horizon. Attached to its hood was a taut wire which slanted up into the sky to connect with the kite.
 It helps Martain people regain their ability to communicate.
 Acoustix can be sold at a high price.  It's an ore that can only be found in one place.  It helps Martain people regain their ability to communicate.  It's an abundant ore that Earth people sell.