st the horror that gripped him. He feared to look into
the mirror, yet knew that he must. He reached it, reared to his full
height, and gazed into the glass--at the reflection of Manape, the
great ape of the cage!

Instantly a murderous fury possessed him. He whirled on Barter, to
scream out at the man, to beg him to explain what had happened, why
this ghastly hallucination gripped him. But all he could do was
bellow, and smash his mighty chest with his fists, so that the sound
went crashing out across the jungle--to be answered almost at once by
the drumming of other mighty anthropoids outside, beyond the clearing
which held the awful cabin of Caleb Barter.

He started toward Barter, still bellowing and beating his chest. His
one desire was to clutch the scientist and tear him limb from limb,
and he knew that his mighty arms were capable of ripping the scientist
apart as though Barter had been a fly.

"Back, you fool!" snarled Barter. "Back, I say!"

The long lash of the whip cracked like a revolver shot, and the lash
curled about the chest and neck of Bentley. It ripped and tore like a
hot iron. It struck again and again. Bentley could not stand the awful
beating the scientist was giving him. In spite of all his power he
found himself being forced back and back.

* * * * *

He stepped into the cage, cowered back against its side. Barter darted
in close, shut the door and fastened it. Then he stood against the
bars, grinning.

"Nod your head if you can understand me, Bentley," he said.

Bentley nodded.

"I told you I would yet prove to the world the greatness of Caleb
Barter," said the scientist. "And you will bear witness that what I
have to tell is true. Would you like to know what I have done?"

Again, slowly and laboriously, Bentley nodded his shaggy head.

Barter grinned.

"Wonderful!" he said. "You see, you are now Manape. Yesterday you had
the brain of a black man, and to exchange your brain with Manape's of
yesterday would not have served my purpose in the least. So I had to
find an ape of more than average intelligence. That's why I spent so
much time in the jungle yesterday. I needed a brain to put in the body
of Lee Bentley's--an ape's brain. Your body is a healthy one and I did
not think it would die as the savage's did. I was right. It is doing
splendidly. It would interest you to see how your body behaves with an
ape's brain to direct it. Your other self, whom