ut the
size was too much.

Plucking away the arms that were tightened about his neck, Nicolas held
the dwarf away from him with his left hand, then struck him heavily in
the face with his right. Taking a step more toward the center of the
cavern, he hurled his opponent across the room.

Nikol struck the floor with a thud and lay still.

Now, realizing the need of haste, Nicolas turned quickly and made as
though to move toward the exit. But he had delayed too long. The dwarf's
efforts to hold him, though futile, had been enough to prevent the
Montenegrin's escape.

A second huge form--the form of Ivan--barred the exit.

"Come on, have a try," said Ivan, with a grin.

Nicolas gave a loud cry--the cry of a cornered beast. Then he sprang.

"I'll kill you!" he yelled in a voice of thunder.

CHAPTER XI.

A FIGHT.

All the others in the cavern were on their feet now, all save Nikol, who
still lay unconscious where Nicolas had hurled him. Stubbs shrank back in
the dark, but Hal, Chester and the two British officers quickly produced
revolvers with which they covered Nicolas.

Ivan, out of the tail of his eye, caught sight of these movements. He let
out a roar even as Nicolas sprang upon him.

"Put up those guns!" he shouted. "I'll attend to this fellow with my bare
hands. Stand back!"

There was something in the voice of the big Cossack that impelled the
others to obey; and they drew back, circling about to watch the struggle.
Even Stubbs picked up courage enough to come forward; and hardly had the
fight begun when Nikol, too, pulled himself up and cast his eyes upon the
combatants.

Nicolas sprang upon Ivan with outstretched arms, his fingers spread wide.
His object was to clasp one of his strong hands about Ivan's throat, thus
obtaining an advantage at the outset. But Ivan had divined his intention
at the moment he sprang, and ducking with remarkable agility for a man of
his size, he came up inside the other's arms and grasped his opponent
around the middle with both arms.

Then he squeezed; and the spectators drew their breaths audibly, for it
seemed that no man could stand such a strain. But Nicolas bore up under
it, and when Ivan, out of wind, was forced to relinquish his hold,
Nicolas whirled upon him quickly and the fingers of his left hand sank
into the Cossack's throat. Chester uttered a faint cry of alarm, for a
hold such as this, obtained by such a powerful man as Nicolas, was indeed
a thin