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..