Scarcely had he done so when four shots were fired, and Gregory took a steady aim at the chief.

The latter threw up his arms, and fell.

With a yell of fury, the others dashed forward.

Zaki did not fire until they were within twenty yards, and directly afterwards Gregory fired again.

There were now but five assailants.
"Now for your pistols, Zaki!" he cried, glancing round for the first time.
He then saw why Zaki had not fired when he first did so--his horse was lying dead in front of him, shot through the head.
"Stand by me! Don't throw away a shot! You take the man on the other side of the horse.