will sure be disappointed. No kidding, skipper, that's quite a gadget
you dreamed up!"

The device stood about shoulder-high, with a star-shaped head, one point
of which could be opened. The head would contain the actual brain
energy. Its upper body, cylindrical in shape and of gleaming chrome,
housed the output units through which the brain would react, and also
the controls. Antennas projecting out on either side gave the look of
arms.

Its "waist" was girdled with a ring of repelatron radiators for exerting
a repulsion force when it wanted to move, by repelling itself away from
nearby objects.

Below the repelatrons was an hourglass-shaped power unit, housing a
solar-charged battery.

The power unit, in turn, was mounted on a pancake-shaped transportation
unit. This unit was equipped with both casters and a sort of
caterpillar-crawler arrangement for the contrivance to get about over
obstacles. Inside was a gyro-stabilizer to keep the whole device
upright.

Tom felt a glow of pride--and eager impatience--as he inspected the
device. If it worked as he hoped, this odd creature might one day
provide earth scientists with a priceless store of information about
intelligent life on Planet X!

Bud and Chow, entering the laboratory soon after Hank Sterling had left,
found Tom still engrossed in his thoughts.