During the breakfast section of Tom's morning duties, Tom read the latest copy of the "Proceedings of the I.R.E." with some relish. A paper on the "Crystallographic Generation of Microwaves" complete with plainly manipulated differential calculus and engineering data occupied most of his time. The rest of the time through coffee he was making marks on the tablecloth with the egg-laden end of his fork and trying to fit the crystallographic generation of microwaves into a problem that made the article most timely; the solution for which he had been seeking for a week. The mail arrived. Three household bills were filed in the desk to await the first of the month. Two advertisements were filed into the wastebasket. One thick letter addressed to Thomas Lionel, Ph.D., M.M., was taken carefully between thumb and forefinger and deposited in a letter file. Tom then inspected the other letter file and found two letters addressed to Tom Lionel, Consulting Engineer, which he opened and read. One was from a concern in Cedar Rapids that wanted some information on a method of induction heating glued joints selectively without waiting for the normal drying time. The other was a letter from a medium-sized town in Illinois pertaining to some difficulty they were having with police-radio coverage of that area. Both letters meant money, and Tom Lionel set the first aside while he started to work on the second. From the engineering data supplied by the local engineer, Tom decided that a change in antenna height and a conversion from quarter-wave current fed to a one and one quarter-wave current fed antenna would give the desired coverage. He concluded his letter with four pages of calc, seven diagrams, and as a last measure dropped a photograph of a similar installation in the envelope. He gloated. That would net him a pretty penny. The guy who hung that antenna on top of the water tank thought he was smart, getting all that height. But the roof was metal, and therefore the radiation angle took off from the rooftop as a basis rather than the true ground a hundred feet below. The tank top was greater than three wave lengths in diameter, and conical to boot. Tom grinned at the maze of mathematics that solved it--and as far as he was concerned it was solved, for Tom Lionel was a top-flight engineer. He checked on his calendar. Metal for the sonic job was not due for a week yet; a minute casting was still being held up for the foundry's pleasure; and the life-test of the bearing-jewel for the Watson Instrument Corporation was still on. Good jewel that. No sign of freeze-up or wear-out after twenty-seven million cycles. "Theory of Monomolecular Films be hanged," he snorted. "He's the kind of a guy that would try to analyze the brew that MacBeth's three witches were cooking up. And don't ask why!"