With a prayer Bronson separated a sizable hunk of the phosphor to work upon, while the other "sang." He breathed no sigh of relief until he had half of the original phosphor back in the tube with the works completely covered, as before, by the mad mass of meaningless hoots and catcalls. Then he went to work on the other piece. He did have a parallel set-up right on the same bench. There was something about this.... During the hours that followed there were three breaks in the whistlings. The first produced only the words "nature of the situation--" The second time the woman said, "--something _must_ be done, of course, but you tell me what. I--" which also left Bronson completely in the dark. The third time, she said "--so this part of the Carlson family is going to bed!" After which there was no woman's voice riding along with the myriad of sounds. They were as before, like a radio that has gone off the air, leaving an increased racket of background noise. It was maddening and futile. All he had to show for her hours of telephoning was her name. Carlson. All he had to do was to get the telephone directories of all the cities in the United States of America and perhaps Canada, then run through the listings of 'Carlson' until he hit one that lived on 1347 Vermont Street. It might as well have been 'Smith' as far as running them down went. He could try Central City. After all, he could easily have made an error in listening. But that was futile. Bronson sought the entire list of Carlsons and found none who lived on Vermont Street or any phonetic variation. Grumbling and baffled, he returned to his labors. That, at least, proved more profitable. It was midnight when Bronson discovered that tapping one of the bits of phosphor caused a response in the other when they were energized by the electron bombardment from the television tube works. From that point to vibrating the hunk of phosphor with the adapted insides of an old earphone and getting a response, took another hour of whittling, filing and working. He discarded that method of modulation two hours later when he discovered that an audio modulation of the electron stream in the kinescope tube produced the same effect. Then, dead tired, Ed Bronson went to bed. He'd have called the woman right then and there had she been handy, but she had gone. Bronson was truly beat. Had he stopped to think about it he would have known that something big was in the wind. For he was tapping no telephones. He had accidentally discovered some sort of communication receiving principle and had then devised a transmitter. His first thought on the following morning was to try the receiver. She was there, all right, and so was a hooting cry of the dissonant pipe-organings. Bronson shrugged and fired up his transmitting gadget. "Miss Carlson!" he called into the microphone. "Calling Miss Carlson of Thirteen forty-seven Vermont Street. Can you hear me?" Then he listened.