use for ivory!"

Some of the Manyuema started to lay down their loads, but this was
altogether too much for the avaricious Arabs. With loud shouts
and curses they aimed their guns full upon the bearers, threatening
instant death to any who might lay down his load. They could give
up firing the village, but the thought of abandoning this enormous
fortune in ivory was quite beyond their conception--better death
than that.

And so they marched out of the village of the Waziri, and on the
shoulders of their slaves was the ivory ransom of a score of kings.
Toward the north they marched, back toward their savage settlement
in the wild and unknown country which lies back from the Kongo in
the uttermost depths of The Great Forest, and on either side of
them traveled an invisible and relentless foe.

Under Tarzan's guidance the black Waziri warriors stationed themselves
along the trail on either side in the densest underbrush. They
stood at far intervals, and, as the column passed, a single arrow
or a heavy spear, well aimed, would pierce a Manyuema or an Arab.
Then the Waziri would melt into the distance and run ahead to take
his stand farther on. They did not strike unless success were
sure and the danger of detection almost nothing, and so the arrows
and the spears were few and far between, but so persistent and
inevitable that the slow-moving column of heavy-laden raiders was
in a constant state of panic--panic at the uncertainty of who the
next would be to fall, and when.

It was with the greatest difficulty that the Arabs prevented their