, sending a dozen
rolling lifeless to the ground. Then the apes closed with their
adversaries. All their attention was occupied by the attackers--even
the guard had deserted the prisoners to join in the battle.

"Come!" whispered Kar Komak. "Now may we escape while their
attention is diverted from us by my bowmen."

"And leave those brave fellows leaderless?" cried Carthoris, whose
loyal nature revolted at the merest suggestion of such a thing.

Kar Komak laughed.

"You forget," he said, "that they are but thin air--figments of my
brain. They will vanish, unscathed, when we have no further need
for them. Praised be your first ancestor, redman, that you thought
of this chance in time! It would never have occurred to me to imagine
that I might wield the same power that brought me into existence."

"You are right," said Carthoris. "Still, I hate to leave them,
though there is naught else to do," and so the two turned from
the courtyard, and making their way into one of the broad avenues,
crept stealthily in the shadows of the building toward the great
central plaza upon which were the buildings occupied by the green
warriors when they visited the deserted city.

When they had come to the plaza's edge Carthoris halted.

"Wait here," he whispered. "I go to fetch thoats, since on foot
we may never hope to escape the clutches of these green fiends."

To reach the courtyard where the thoats were kept it was necessary
for Carthoris to pass through one of the buildings which surrounded
the square. Which were occupied and which not he could not even
guess, so he was compelled to take considerable chances to gain
the enclosure in which he could hear the restless beasts squealing
and quarrelling among themselves.

Chance carried him through a dark doorway into a large chamber in
which lay a score or more green warriors wrapped in their sleeping
silks and furs. Scarce had Carthoris passed through the short
hallway that connected the door of the building and the great room
beyond it than he became aware of the presence of something or some
one in the hallway through which he had but just passed.

He heard a man yawn, and then, behind him, he saw the figure of a
sentry rise from where the fellow had been dozing, and stretching
himself resume his wakeful watchfulness.

Carthoris realized that he must have passed within a foot of the
warrior, doubtless rousing him from his slumber. To retreat now
would be impossi