But his was not a sacrifice in vain. He had established an idea in our ennui-bursting minds. An idea which led to the discovery of Moon Glow. My discovery, I should say, for I was the first. Naturally, I cannot divulge my secret formula for Moon Glow. There are many kinds of Moon Glow these days, but there is still only one B-12 Moon Glow. Suffice it to say that it is a high octane preparation, only a drop of which--but you know the effects of Moon Glow, of course. How the merest thimbleful, when judiciously poured into one's power pack, gives new life and the most deliriously happy freedom of movement imaginable. One possesses soaring spirits and super-strength. Old, rusted joints move freely once more, one's transistors glow brightly, and the currents of the body race about with the minutest resistance. Moon Glow is like being born again. The sale of it has been illegal for several years, for no reason that I can think of except that the Builders, who make the laws, can not bear to see metal people have fun. Of course, a part of the blame rests on such individuals as X-101, who, when lubricated with Moon Glow, insists upon dancing around on large, cast-iron feet to the hazard of all toes in his vicinity. He is thin and long jointed, and he goes "creak, creak," in a weird, sing-song fashion as he dances. It is a shameful, ludicrous sight. Then there was DC-5, who tore down the 300 feet long equipment hangar of the Builders one night. He had over-indulged. * * * * * I do not feel responsible for these things. If I had not sold them the Moon Glow, someone else would have done so. Besides, I am only a wholesaler. Benny buys everything that I am able to produce in my little laboratory hidden out in the Dumps. Just now, by Benny's attitude, I knew that something was very wrong. "What is the matter?" I said. "Is it the revenue agents?" "I do not know," said BNE-96 in that curious, flat voice of his that is incapable of inflection. "I do not know, but there are visitors of importance from Earth. It could mean anything, but I have a premonition of disaster. Jon tipped me off." He meant Jon Rogeson, of course, who was the peace officer here in Argon City, and the only one of the Builders I had ever met who did not look down upon a metal person. When sober he was a clever person who always looked out for our interests here. "What are they like?" I asked in some fear, for I had six vials of Moon Glow with me at the moment. "I have not seen them, but there is one who is high in the government, and his wife. There are half a dozen others of the Builder race, and one of the new type metal persons." I had met the she who must have been the wife. "They hate us," I said. "We can expect only evil from these persons." "You may be right. If you have any merchandise with you, I will take it, but do not risk bringing more here until they have gone."