Only Joan was perfectly at ease. She played for a time with the ears of Black Bart, or pried open his mouth and made him show the great white fangs, or scratched odd designs on the hearth with pieces of charcoal; but finally she lost interest in all these things and let her head lie on the rough pelt of the wolf-dog, sound asleep. The firelight made her hair a patch of gold.

Black Bart slept soundly, too, that is, as soundly as one of his nature could sleep, for every now and then one of his ears twitched, or he stirred a paw, or an eyelid quivered up. Yet they all started when he jumped from his sleep into full wakefulness; the motion made Joan sit up, rubbing her eyes, and Black Bart reached the center of the room noiselessly. He stood facing the door, motionless.

“It's Dan,” cried Kate. “Bart hears him! Good old Bart!”

The dog pointed up his nose, the hair about his neck bristled into a ruff, and out of his quaking body came a sound that seemed to moan and whimper from the distance at first, but drew nearer, louder, packed the room with terror, the long drawn howl of a wolf.

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Chapter XIII. Equal Payment

They knew what it meant; even Joan had heard the cry of the lone wolf hunting in the lean time of winter, and of all things sad, all things lonely, all things demoniacal, the howl of a wolf stands alone. Lee Haines reached for his gun, little Joan stood up silent on the hearth, but Kate and Buck Daniels sat listening with a sort of hungry terror, as the cry sobbed away to quiet. Then out of the mountains and the night came an answer so thin, so eerie, one might have said it was the voice of the mountains and white stars grown audible; it stole on the ear as the pulse of a heart comes to the consciousness.

Truly it was an answer to the cry of the wolf-dog, for in the slender compass it carried the same wail, the same unearthly quality with this great difference, that a thrilling happiness went through it, as if some one walked through the mountains and rejoiced in the unknown terrors. A sob formed in the throat of Kate and the wolf turned its head and looked at her, and the yellow of things that see in the night swam in its eyes. Lee Haines struck the arm of Buck Daniels.

“Buck, let's get clear of this. Let's start. He's coming.”

At the whisper Buck turned a livid face; one could see him gather his strength.