He didn't ever look at Menner again. The old man leaned back against the shelf behind the bar, trembling, two trickles of red running down his neck and staining his shirt collar--I could see he wanted to touch the places where he'd been shot, to see how bad they were or just to rub at the pain, but he was afraid to raise a hand. He just stood there, looking sick. Buck was staring at the little man in town clothes, over by the window. The little man had reared back at the shots, and now he was sitting up in his chair, his eyes straight on Buck. The table in front of him was wet where he'd spilled his drink when he'd jumped. Buck looked at the little guy's fancy clothes and small mustache and grinned. "Come on," he said to me, and picked up his drink and started across the floor. "Find out who the dude is." He pulled out a chair and sat down--and I saw he was careful to sit facing the front door, and also where he could see out the window. I pulled out another chair and sat. "Good shooting, huh?" Buck asked the little guy. "Yes," said the little guy. "Very fine shooting. I confess, it quite startled me." Buck laughed harshly. "Startled the old guy too...." He raised his voice. "Ain't that right, Menner? Wasn't you startled?" "Yes, sir," came Menner's pain-filled voice from the bar. Buck looked back at the little man--let his insolent gaze travel up and down the fancy waistcoat, the string tie, the sharp face with its mustache and narrow mouth and black eyes. He looked longest at the eyes, because they didn't seem to be scared. He looked at the little guy, and the little guy looked at Buck, and finally Buck looked away. He tried to look wary as he did it, as if he was just fixing to make sure that nobody was around to sneak-shoot him--but you could see he'd been stared down. When he looked back at the little guy, he was scowling. "Who're you, mister?" he said. "I never seen you before." "My name is Jacob Pratt, sir. I'm just traveling through to San Francisco. I'm waiting for the evening stage." "Drummer?" "Excuse me?" For a second Buck's face got ugly. "You heard me, mister. You a drummer?" "I heard you, young man, but I don't quite understand. Do you mean, am I a musician? A performer upon the drums?" "No, you goddam fool--I mean, what're you selling? Snake-bite medicine? Likker? Soap?" "Why--I'm not selling anything. I'm a professor, sir." "Well, I'll be damned." Buck looked at him a little more carefully. "A perfessor, huh? Of what?" "Of psychology, sir." "What's that?" "It's the study of man's behavior--of the reasons why we act as we do." Buck laughed again, and it was more of a snarl. "Well, perfessor, you just stick around here then, and I'll show you some _real_ reasons for people acting as they do! From now on, I'm the big reason in this town ... they'll jump when I yell frog, or else!"