"It is a gund-bar," explained Ta-den, "a chief-battle. This fellow
must be Es-sat, the chief. If Om-at kills him without assistance
Om-at may become chief."

Tarzan smiled. It was the law of his own jungle--the law of the
tribe of Kerchak, the bull ape--the ancient law of primitive man
that needed but the refining influences of civilization to introduce
the hired dagger and the poison cup. Then his attention was drawn
to the outer edge of the vestibule. Above it appeared the shaggy
face of one of Es-sat's warriors. Tarzan sprang to intercept the
man; but Ta-den was there ahead of him. "Back!" cried the Ho-don
to the newcomer. "It is gund-bar." The fellow looked scrutinizingly
at the two fighters, then turned his face downward toward his fellows.
"Back!" he cried, "it is gund-bar between Es-sat and Om-at." Then
he looked back at Ta-den and Tarzan. "Who are you?" he asked.

"We are Om-at's friends," replied Ta-den.

The fellow nodded. "We will attend to you later," he said and
disappeared below the edge of the recess.

The battle upon the ledge continued with unabated ferocity, Tarzan
and Ta-den having difficulty in keeping out of the way of the
contestants who tore and beat at each other with hands and feet and
lashing tails. Es-sat was unarmed--Pan-at-lee had seen to that--but
at Om-at's side swung a sheathed knife which he made no effort to
draw. That would have been contrary to their savage and primitive
code for the chief-battle must be fought with nature's weapons.