etal, stretched like rubber
and were curiously light in weight. I got the impression now that
the garments, these wires and disks, the helmet and the belt with
its dial-face--all this strange mechanism and even the green-ray
projector weapon--all of it was organic substance. And this
afterward proved to be the fact.[1]

[1] As we later learned, the scientific mechanism by which
the transition was made from the realm of the fourth
dimension to our own earthly world and back again, was only
effective to transport organic substances. The green
light-beam was of similar limitation. An organic substance
of our world upon which it struck was changed in vibration
rate and space-time co-ordinates to coincide with the
characteristics with which the light-current was endowed.
Thus the invaders used their beams as a weapon. The light
flung whatever it touched of organic material with horrible
speed of transition away into the Unknown--to the fourth,
fifth, or perhaps still other realms. In
effect--annihilation.

The mechanism of wires and dials (and small disks which were
storage batteries of the strange current) was of slower,
more controllable operation. Thus it could be used for
transportation--for space-time traveling, as Earth
scientists later came to call it. The invaders, wearing this
mechanism, materialized at will into the state of matter
existing in our world--and by a reversal of the co-ordinates
of the current, dematerialized into the more tenuous state
of their own realm.

We were soon disrobed and garbed in the white suits of our enemies.
The jacket and trunks stretched like rubber to fit us.

"Can't hope to get the wires right," Don whispered. "Got your
helmet?"

"Yes. The belt fastens behind, Don."

"I know. These accursed little disks, what are they?"

We did not know them for storage batteries as yet. They were thin
flat circles of flexible material with a cut in them so that we
could spring the edges apart and clasp them like bracelets at
intervals on our arms and legs. The wires connected them, looped up
to the helmet, and down to the broad belt where there was an
indicator-dial in the middle of the front.[2]

[2] We were soon to learn also that they were bringing into
our world weapons, food, clothing and a variety of equipment
by encasing the articles in containers operated by these
same mecha