n days with the aid of The Brain. His love--he would never
see Oona Dahlborg again as he left under a shadow, rejected by The
Brain.

"Sorry I wasted so much of your time," he said aloud. "I do not believe
in this analysis; I cannot disprove it though. That's all, I guess; I
better be going now."

"Here's your pass, Dr. Lee." He took mechanically the yellow slip which
Bondy handed him....

He had already opened the door when somebody sharply called: "Dr. Lee,
one moment please."

He whirled around. "Yes?"

"Will you please read what's written on your slip?"

Suspiciously he looked at the yellow paper; what more torture were these
fellows going to inflict? Then his eyes popped as he read: "Lee, Semper
Fidelis, 39: Cortex capacity 119%, Sensitivity 208%, Personality
integration 95%, Service qualification 100%...." There were more data,
but he didn't read them as wide-eyed he stared at the medics. With their
faces beaming they looked like identical twins to him; Lee never knew
who said the words:

"Congratulations Lee. That has been your last test. We just had to find
out how you would take a serious frustration. You've passed it with
flying colors. Shake."

CHAPTER IV

Apperception 36, Lee's lab within The Brain, looked much like
Apperception 27 except for its interior fittings. As a matter of fact,
all the several hundred Apperception Centers were built after the same
plan, like suites in a big office building in many respects. They were
spread over The Brain occipital region; they were built inside the
concrete wall of the "dura matter" which in turn lay within the shell of
the "bone matter", a mile or so of solid rock. Each apperception center
had its own elevator shaft which went through the concrete of the "dura
matter" down to "Grand Central", the traffic center below The Brain.
Each one was also connected at the other end of its corridor with the
glideways which snaked through the interior of The Brain. There were,
however, no transversal or direct communications from one apperception
center to the next. Because of the extraordinary diversity and secrecy
of the projects submitted to The Brain' processings, each apperception
center was completely insulated against its neighbors.

Life hadn't changed so much from what it had been in the Australian
desert Lee had found; at least not his working life. For all he knew
some nuclear physicists might be working in the lab next door; or they
might be b