"Lie there, you coward!" he exclaimed.
And then, as the fellow whom he had knocked down struggled to his knees, to stare up at him, Bob discovered, not a little to his surprise, and satisfaction as well, that he was looking into a familiar face.
It was Peg Grant!
CHAPTER II
THE STRANGE ACTIONS OF DOMINO
"Well, I declare!" exclaimed Frank; which remark showed how much surprised he was to recognize the youth whom his chum had sent to the ground.
"What do you mean by hitting me like that?" snarled the rich man's son, as he managed to scramble to his feet again, though he seemed a bit "groggy," and one of his eyes was already turning dark, as if it had come in violent contact with a stone when he struck the ground.
"What do you mean, hurting that poor little Mexican girl?" demanded Bob, who stood on his guard, as though he might not be averse to trying conclusions with the bully, if so be the other felt like seeking satisfaction for his upset.
"She sassed me when I ordered her to get out of my way, that's what she did;" declared Peg, wrathfully, "and I'd look nice now, wouldn't I, letting a little greaser kid talk back to me? So I was just giving her a good shaking when you broke in. Guess you didn't know who you were hitting when you did that, Bob Archer!"