"My sons, you forget it is not the Earthmen themselves at the bottom of your trouble, but the _things_ of Earth. Think of the telegraph and the newspaper, how these spread news of every shipment from Earth. The merchandise of the Earthmen is put up for sale by means of these newspapers, which also are the property of the Earthmen. The people are intrigued by these advertisements, as they are called, and flock to buy. Now, if you would pull a tooth from the kwi that bites you, you might also have advertisements of your own." Alas for that suggestion, no newspaper would accept advertising from the House of Masur; all available space was occupied by the advertisements of the Earthmen. In their dozenth conference since that first and fateful one, the brothers Masur decided upon drastic steps. In the meantime, several things had happened. For one, old Kalrab had passed on to his immortal rest, but this made no real difference. For another, the Earthmen had procured legal authority to prospect the planet for metals, of which they found a good deal, but they told no one on Zur of this. What they did mention was the crude oil and natural gas they discovered in the underlayers of the planet's crust. Crews of Zurians, working under supervision of the Earthmen, laid pipelines from the gas and oil regions to every major and minor city on Zur. * * * * * By the time ten years had passed since the landing of the first terrestrial ship, the Earthmen were conducting a brisk business in gas-fired ranges, furnaces and heaters ... and the Masur stove business was gone. Moreover, the Earthmen sold the Zurians their own natural gas at a nice profit and everybody was happy with the situation except the brothers Masur. The drastic steps of the brothers applied, therefore, to making an energetic protest to the governor of Lor. At one edge of the city, an area had been turned over to the Earthmen for a spaceport, and the great terrestrial spaceships came to it and departed from it at regular intervals. As the heirs of the House of Masur walked by on their way to see the governor, Zotul observed that much new building was taking place and wondered what it was. "Some new devilment of the Earthmen, you can be sure," said Koltan blackly. In fact, the Earthmen were building an assembly plant for radio receiving sets. The ship now standing on its fins upon the apron was loaded with printed circuits, resistors, variable condensers and other radio parts. This was Earth's first step toward flooding Zur with the natural follow-up in its campaign of advertising--radio programs--with commercials. Happily for the brothers, they did not understand this at the time or they would surely have gone back to be buried in their own clay.