whose effect on your body is similar to that of the first one on the
air-fleet.

"You can hear me, perfectly. You can see me. I ask you to watch me
closely. Then consider, if you please, the matter of placing me under
arrest."

His hand touched a small disk near the button he had first pressed;
a disk of some strange metal, iridescent, gleaming with a peculiar
greenish patina that, even as one watched it, seemed to blend into
other shades, as an oil-scum transmutes its hues on water.

Now a faint, almost inaudible hum began to make itself heard. This hum
was not localized. One could not have told exactly whence it came. It
filled the cabin with a kind of soft murmuring that soothed the senses
like the drowsy undertone of bees at swarm.

For a moment nothing happened. Then the pupils of Leclair's eyes began
to dilate with astonishment. Immovable though he still remained, the
most intense wonder made itself apparent in his look. Even something
akin to fear was mirrored in his gaze. Again his lips twitched. Though
he could form no word, a dry, choking gasp came from his throat.

And there was cause for astonishment; yes, even for fear. A thing
was beginning to take place, there in the brightly lighted cabin of
_Nissr_, such as man's eye never yet had beheld.

The Master was disappearing.