Zezdon Fentes, with my aid, set up some
special apparatus, which would pick up strong thoughts and make them
visible. We had used this before to see not only what an enemy
looked upon, but also what he saw in that curious thing, the eye
of the mind, the vision of the past and the future. But while the
thought-amplification device was powerful, the new emanations were hard
to separate from each other.

"It was done finally, when all but one man slept. That one we were
enable to tune sharply to. After that we could reach him at any time. He
was the commander. We saw him operate the ship, we saw the ship, saw it
glide over the barren, rocky surface of that world. We saw other men
come in and go out. They were strange men. Short, squat, bulky men.
Their arms were short and stocky. But their strength was enormous,
unbelievable. We saw them bend solid bars of steel as thick as my arm.
With perfect ease!

"Their brains were tremendously active, but they were evil, selfishly
evil. Nothing that did not benefit them counted. At one time our
instruments went dead, and we feared that the commander had detected us,
but we saw what happened a little later. The second in command had
killed him.

"We saw them examine the world, working their way across it, wearing
heavy suits, yet, for all the terrific gravity of that world, bouncing
about like rubber balls, leaping and jumping where they wanted. Their
legs would drive out like pistons, and they soared up and through the
air.

"They were tired while they made those examinations, and slept heavily
at night.

"Then one night there was a conference. We saw then what they intended.
Before we had tried desperately to signal them. Now we were glad that we
had failed.

"We saw their ship rise (in the thoughts of the second in command) and
sail out into space, and rush toward our world. The world grew larger,
but it was imperfectly sketched in, for they did not know our world
well. Their telescopes did not have great power as your electric
telescopes have.

"We saw them investigate the planet. We saw them plan to destroy any
people they found with a ray which was as follows: 'the ray which makes
all parts move as one.' We could not understand and could not interpret.
Thoughts beyond our knowledge have, of course, no meaning, even when our
mental amplifiers get them, and bring them to us."

"The Molecular ray!" gasped Morey in surprise. "They will be an enemy."

"You know it! It is