Still there was no sign from the Indian.

She saw her brother motion the Sergeant round to the farther corner of the penthouse where it ran into the spruce tree, while he himself, with a revolver in each hand, dropped on one knee and peered under the leaning poles.

With a loud exclamation he sprang to his feet.
"He's gone!" he shouted.

"Stand where you are!" Like a hound on a scent he ran to the back of the spruce tree and on his knees examined the earth there.

In a few moments his search was rewarded.