to feel their way, like a blind man, about the floor.

Harper stared wildly, white showing around his pale blue irises.

"No!" he bleated. "The Professor didn't do it himself--I caused
it to happen. I bent the paper cutout, and--and Something saw me
do it, and imitated me by bending the Professor into the fourth
dimension!" Harper moaned faintly, wringing his hands.

Pillbot at the moment got little satisfaction from this
demonstration of his point about four dimensional life. He
glanced fearfully at the half-figure.

"You--you mean to say," he quailed, "that we are under scrutiny
by some Being of the fourth dimension?"

"That's it," replied Harper with a whinny. "I--I know it, I can
feel it. It became aware of our three dimensional life in some
way, and its attention is now concentrated on the laboratory!" He
wrung his hands. "I just know something else terrible is going to
happen!" He backed away quickly as the occupied pair of pants
moved toward him.

His retreat was halted by his desk, upon which reposed two large
California oranges, an inevitable accompaniment to Harper's
lunch. To him, orange juice was a potent, revivifying drink. Now
he automatically reached for one of the oranges, as a more hardy
individual might reach for a whisky and soda in a moment of
mental shock.

His eyes wide on the shuffling approach of Gault's underpinnings,
Harper nervously dug sharp fingernails into the orange, tore off
large chunks of skin.

A sudden blur seen from the corner of his eyes pulled his gaze
back to the desk. The other orange had vanished.

_Phwup_!

It dropped to the floor before Harper, but now it was a squashy
mess, the insides standing out like petals, the juice running
from it.

The other orange slipped from Harper's nerveless fingers, rolled
along the desk top. Harper pounced on the squashy thing on the
floor, feverishly pushed back the projecting insides, closely
examined it. He looked up wide-eyed at Pillbot.

"Turned inside out," he gasped hoarsely, "without breaking its
skin!"

Pillbot's expression indicated that the scientific attitude was
slowly replacing his former fright. He snapped his fingers.

"Imitation again!" he said, half to himself. He looked at Harper.
"When you bent the paper figure this--this fourth dimensional
entity imitated your action by bending the Professor. Now, as you
started to peel the orange, your action was again imitated--in a
four dimensional manner--by this en