The wary Indian scented danger.
A faint moan breathed low above the sound of gently splashing water somewhere beyond the glade.
"Woo-o-oo." The guard's figure stiffened, and became rigidly erect; his blanket slowly slid to his feet.
"Ah-oo-o," sighed the soft breeze in the tree tops.
Louder then, with a deep wail, a moan arose out of the dark gray shadows, swelled thrilling on the still air, and died away mournfully.
"Um-m-mmwoo-o-o-o!" The sentinel's form melted into the shade.

He was gone like a phantom.
Another Indian rose quickly, and glanced furtively around the glade.
He bent over a comrade and shook him.

Instantly the second Indian was on his feet.

Scarcely had he gained a standing posture when an object, bounding like a dark ball, shot out of the thicket and hurled both warriors to the earth.

A moonbeam glinted upon something bright.