It might be better to find the value of x. That blasted machine must have some purpose. Granted, it ate dirt. But matter cannot be destroyed; it can be changed into other forms.

Dirt went into the machine; nothing came out.

Nothing visible.

Free energy?

That was invisible, but could be detected with instruments.

Voltmeter, ammeter—gold leaf—

Gallegher turned the machine on again briefly. Its singing was dangerously loud, but no one rang the door buzzer, and after a minute or two Gallegher snapped the switch back to OFF. He had learned nothing.

Arnie called. The broker had secured the information Gallegher wanted.

“ Twasn’t easy. I had to pull some wires. But I found out why DU stock’s been dropping.”

“Thank Heaven for that! Spill it.”