et."

Arcot strode to the middle of the room, and then Morey turned the
reflector of the beam set on him. There was a low snap as Arcot turned
on his set, then he was gone, as suddenly as the coming of darkness when
a lamp is extinguished. He was there one moment, then they were staring
at the chair behind him, knowing that the man was standing between them
and it and knowing that they were looking through his body. It gave them
a strange feeling, an uncomfortable tingling along the spine. Then the
voice--it seemed to come from the air, or some disembodied ghost as the
invisible man called to Morey.

"All right, Bob, turn her on slowly."

There was another snap as the switch of the disrupter beam was turned
on. At once there was a noticeable fogginess in the air where Arcot had
been. As more and more power was turned into the machine, they saw the
man materialize out of thin air. First he was a mere shadowy outline
that was never fully above the level of conscious vision. Then slowly
the outlines of the objects behind became dimmer and dimmer, as the body
of the man was slowly darkened, till at last there was only a wavering
aura about him. With a snap Morey shut off his machine and Arcot was
gone again. A second snap and he was solid before them. He had shut off
his apparatus too.

"You can see now how we intend to locate our invisible pirate. Of course
we will depend on directional radio disturbance locating devices to
determine the direction for the invisibility disrupter ray. But you are
probably marvelling at the greatness of the genius who can design and
construct this apparatus all in one day. I will explain the miracle. I
have been working on short wave phenomena for some time. In fact, I had
actually made an invisibility machine, as Morey will testify, but I
realized that it had no commercial benefits, so I didn't experiment with
it beyond the laboratory stunt stage. I published some of the theory in
the Journal of the International Physical Society--and I wouldn't be
surprised to learn that the pirate based his discovery on my report.

"I am still working on a somewhat different piece of apparatus that I
believe we will find very relevant to this business. I'll ask you to
adjourn after tonight's meeting for another twenty-four hours till I can
finish the apparatus I am working on. It is very important that you be
here, Fuller. I am going to need you in the work to follow. It will be
another problem of des