re-imposed—this time, even more stringently and rigidly than ever before. Coupled with this was another force—apparently unrelated—which acted to tie in with the Federal security regulations. The juvenile delinquent gangs had begun to realize the value of science. Teen-age hoodlums armed with homemade pistols were dangerous enough in the Fifties; add aimed rockets and remote-control bombs to their armories, and you have an almost uncontrollable situation. Something had to be done, and various laws controlling the sale of scientific apparatus had been passed by the fifty states. And—as with their liquor and divorce laws—no two of the states had the same set of laws, and no one of them was without gaping flaws. By the time the off-again-on-again wars in Europe had been stilled by the combined pressure of the United Nations—in which the United States and the Soviet Union co-operated wholeheartedly, working together in a way they had not done for over twenty years—the "scientific control laws" in the United States had combined to make scientific research almost impossible for the layman, and a matter of endless red tape, forms-in-octuplicate, licenses, permits, investigations, delays, and confusion for the professional. The answer, of course, was the black market. What bootlegging had done for the average citizen in the Twenties, the black market was doing for scientists fifty years later. The trouble was that, unlike the Volstead Act, the scientific prohibitions aroused no opposition from the man in the street. Indeed, he rather approved of them. He needed and wanted the products of scientific research, but he had a vague fear of the scientist—the "egghead." To his way of thinking, the laws were cleverly-designed restrictions promulgated by that marvelous epitome of humanity, the common man, to keep the mysterious scientists from meddling with things they oughtn't to. The result was that the Latin American countries went into full swing, producing just those items which North American scientists couldn't get their hands on, because the laws stayed on the books. During the next ten years, they were modified slightly, but only very slightly; but the efforts to enforce them became more and more lax. By the time the late Seventies and early Eighties rolled around, the black marketeers were doing very nicely, thank you, and any suggestion from scientists that the laws should be modified was met with an intensive counterpropaganda effort by the operators of the black market. Actually, the word "operators" is a