"How about steppin' inside and havin' a talk ?" The other started forward agreeably, but stopped almost at once.
"Heel!" he called, without turning his head.
Black Bart left the back of the stallion in a long bound that carried him half way to the fence.

His next leap brought him over the rail and beside his master.

Buck Daniels moved back a step involuntarily.
"Bart," he said, "d'you know me ?" He stretched out his hand; and was received with a sudden baring of the fangs.
"Nice dog!" said Buck sarcastically.

"Regular house-pet, ain't he ?" The other apparently missed the entire point of this remark.

He said in his gentle, serious way: "He used to be real wild, Buck.