"Go over to him, Bart," said the gentle voice of the stranger. "Stand fast!"
The last two words, directed to Calder came, with a metallic hardness, for the marshal started as a great black dog slipped from behind a tree and slunk towards him. This was the shadow which moved more swiftly and noiselessly than a human being.
"Keep back that damned wolf," he said desperately.
"He ain't goin' to hurt you," said the calm voice. "Jest toss your gun to the ground."
There was nothing else for it. Calder dropped his weapon with the butt towards Whistling Dan.
"Bring it here, Bart," said the latter.
The big animal lowered his head, still keeping his green eyes upon Calder, took up the revolver in his white fangs, and glided back to his master.
"Jest turn your back to me, an' keep your hands clear of your body," said Dan.
Calder obeyed, sweating with shame. He felt a hand pat his pockets lightly in search for a hidden weapon, and then, with his head slightly turned, he sensed the fact that Dan was dropping his revolver into its holster. He whirled and drove his clenched fist straight at Dan's face.
What happened then he would never forget to
