"When the wire is again run past these coils with a receiver such as I have here in circuit with the coils, a light vibration is set up in the receiver diaphragm which reproduces the sound of speech." He turned a switch and we listened eagerly. There was no grating and thumping, as he controlled the running off of the wire. We were listening to everything that had been said over the telephone during the time since we left the machine.
First came several calls from people with bills and she put them off most adroitly.
Then we heard a call that caused Kennedy to look at me quickly, stop the machine and start at that point over again.
"That's what I wanted," he said as we listened in:
"Give me 4494 Greenwich."
"Hello."
"Hello, Chief. This is Flirty. Have you done anything yet in the little matter we talked about?
"Say—be careful of names—over the wire."
"You know—what I mean."
"Yes, the trick will be pulled off at three o'clock.