ntral
brain, which was set somewhat lower than the others. "This," he said,
"is the master brain. It controls and coordinates the thoughts of the
others, avoiding the useless, pursuing the relevant and retaining the
valuable. It is by far the most important of the five, and is, of course
the superior intellect. It is the keystone of my gateway to all power."

Eliot Leithgow's face was deathly white, but, as one in the grip of some
devilish hypnotic fascination, he could not tear his eyes away from the
revolting, amazing achievement of his brilliant enemy. The Eurasian with
the cruelty of a cat picked that awful moment to add:

"This master brain is all that was best of Master Scientist Cram."

The frail old man took this statement like a blow.

"Oh, dear heaven--not Raymond Cram! Not Cram, the physicist, brought to
this! Why, I knew him when----"

Ku Sui smiled and interrupted. "But you speak of him as if he were dead!
He's not. He's very much alive, as you shall see. Possibly even
happy--who knows? There is no good---- _Keep back, Carse!_"

* * * * *

His tiger's eyes had not missed the adventurer's slight crouch in
preparation for a shove which might have toppled the case and ended the
abominable servitude of its gruesome tenants. The Hawk was caught before
he had well started; and had he not stopped his gathering muscles he
would have been dead from the coolie-guards' rays by the time he touched
the near side of the case.

He took his failure without comment; only stepped back, folded his arms
and burned his enemy with the frigid glare of his eyes. The Eurasian
continued as if nothing had happened, addressing himself chiefly to
Leithgow.

"The others, too, you once knew; you are even charged with their murder.
Let me introduce you once more to your old colleagues and friends.
There, at the right, is the brain you once compared notes with in the
person of Professor Estapp. Next to him is Dr. Swanson. To the left of
Master Scientist Cram, is Professor Geinst, and this last is Dr. Sir
Charles Esme Norman. Now think what this group represents!

"Estapp, Chemistry and Bio-Chemistry; Swanson, Psychology; Geinst,
Astronomy; Norman, Mathematics. And Cram, the master brain, of course,
Physics and Electricity, although his encyclopedic knowledge encompassed
every major subject, well fitting his brain for the position it holds.
All this, gathered here in one! The five outstand