swiftly through the
jungle.

Presently a strange sight burst upon his astonished vision. It was the
hideous Number Three in mad pursuit of a female ourang outang, and an
instant later he saw Number Twelve and Number Ten in battle with two
males, while beyond he heard the voice of a man shouting encouragement
to some one as he dashed through the jungle. It was in this last event
that Sing's interest centered, for he was sure that he recognized the
voice as that of Bulan, while the first cry for help which he had heard
had been in a woman's voice, and Sing knew that its author could be
none other than Virginia Maxon.

Those whom he pursued were moving rapidly through the jungle which was
now becoming more and more open, but the Chinaman was no mean runner,
and it was not long before he drew within sight of the object of his
pursuit.

His first glimpse was of Bulan, running swiftly between two huge bull
ourang outangs that snapped and tore at him as he bounded forward
cutting and slashing at his foes with his heavy whip. Just in front of
the trio was another bull bearing in his arms the unconscious form of
Virginia Maxon who had fainted at the first response to her cry for
help. Sing was armed with a heavy revolver but he dared not attempt to
use it for fear that he might wound either Bulan or the girl, and so he
was forced to remain but a passive spectator of what ensued.

Bulan, notwithstanding the running battle the two bulls were forcing
upon him, was gaining steadily upon the fleeing ourang outang that was
handicapped by the weight of the fair captive he bore in his huge,
hairy arms. As they came into a natural clearing in the jungle the
fleeing bull glanced back to see his pursuer almost upon him, and with
an angry roar turned to meet the charge.

In another instant Bulan and the three bulls were rolling and tumbling
about the ground, a mass of flying fur and blood from which rose fierce
and angry roars and growls, while Virginia Maxon lay quietly upon the
sward where her captor had dropped her.

Sing was about to rush forward and pick her up, when he saw von Horn
and his Dyaks leap into the clearing, to which they had been guided by
the sounds of the chase and the encounter. The doctor halted at the
sight that met his eyes--the prostrate form of the girl and the man
battling with three huge bulls.

Then he gathered up Virginia Maxon, and with a sign to his Dyaks, who
were thoroughly frightened at the