merrily, and seeming quite at ease.

Somehow, Walker did not seem to be pleased at all. He appeared like a man with a very little sense of humor, or he had so much of grave importance on his mind that he did not observe what was going on behind him.

When Cholly De Smythe had collapsed, and the Jew had ceased to talk, the boy squared about in his seat, and seemed to settle to take things in the most comfortable manner possible. He pulled his hat over his forehead, and continued his perusal of the newspaper.

This did not satisfy his seat mate.

"You seem to be very interested in that paper," said Walker.

"I am," was the curt return, and the boy continued reading.

"You are not much of a talker."

"You are."

"H'm! Ha! I am; I am very sociable."

"So I observed."

"I have been wondering what we would do if a band of robbers was to hold up this train."

"I am sure I cannot tell what I would do. I scarcely think any person can tell what he would do in such a case till he meets the emergency."

"I presume you go armed?"

"In the West—yes."

Walker's thin nose seemed to resemble a wedge which he was driving deeper and deeper with each question.

"Would you mind permitting me to look at your revolver?"

"Yes."

The boy uttered that word, and remained silent, without offering to take the weapon out.

Walker coughed.

"H'm! Ha! I think you misunderstood me."

"I think not."

"I asked you if you would mind letting me look at your revolver."

"And I said I would mind."

"Oh!"

The Jew's voice sounded in Walker's ear.

"I haf a revolfer vat I vill sell you sheep. Id vas a recular taisy, selluf-cocker, und dirty-dwo caliber. Here id vas, meester. Id vas loated, so handle id vid care. Vat you gif vor dat peautiful revolfer, meester?"

Walker took the weapon, glanced into the cylinder, to see that it was actually loaded, and then suddenly thrust it against the head of Frank, crying, sharply:

"Hands up, Black Harry! You are my prisoner!"

CHAPTER III.

A THRILLING ACCUSATION.

The words rang through the car, startling the passengers, and causing them to stare in astonishment at the man and the boy.

The man with the revolver was quivering with excitement, while Frank, at whose head the weapon was held, seemed strangely calm.

Exclamations were heard on all sides.

"Black Harry!"

"Is it possible?"

"Not that beardless boy!"

"It's a mistake!"

"If that's Black Harry, his Braves are near, and there is liable to be some shooting before long."

"Sufferin' Moses!" came from the Jew, who owned the revolver. "Ish dat der ropper vat ve read apout der baper in? Stop der cars! I vant to ged off!"

"What do you mean by this crazy act?" calmly demanded Frank, looking straight into Mr. Walker's eyes.

"I mean business, and I am not going to fool with a fellow of your reputation a minute! If you don't put up your hands, I'll send a bullet through your head immediately!"

"Then I shall put up my hands, for I have no fancy for having the top of my head blown off."

Up went the boy's empty hands.

"That's where you are sensible," declared the man with the foxy face. "I have dealt with your kind before, and I know better than to let 'em monkey with me. I am a man with a reputation for catching criminals. At the sound of my name, the professional crooks in the East tremble."

"Walker does not seem to be such a very terrible name."

"Walker—bah! That's not my name!"

"No?"

"Not much!"

"Pray, what is your name, then?"

"I am Burchel Jones, the famous detective," declared the owner of the gimlet eyes, swelling with importance. "Out in this country the fools call me a tenderfoot, but I will show them the kind of stuff I am made of. When they want to catch their desperadoes and robbers, they should send for a tenderfoot detective."

The boy laughed outright.

"You are more sport than a barrel of monkeys," he said, merrily. "What do you think you have done, anyway?"

"I have captured Black Harry, the terrible desperado, who has been giving them so much trouble out here of late."

"You think I am Black Harry?"

"I do not think anything about it—I know it."

"How do you know it?"

"By your face."

"Have you ever seen Black Harry?"

"Yes."

"When?"

"Last night."

"Where?"

"On the northbound Chicago, Rock Island and Pacific express."

"You were on that train?"

"I was, and I saw Black Harry's face when he was unmasked by Robert Dawson—saw it distinctly. You are Black Harry!"

"You were never more deceived in all your life. My name is Frank Merriwell, as I can easily prove."

"Your real name may be Frank Merriwell, but you are the boy desperado who is known as Black Harry, and you are the chap who shot Mr. Robert Dawson."

The detective spoke with conviction, and it was plain that he really believed what he said. The boy began to look grave, as the situation was not exactly pleasant.

"You came from Elreno to Oklahoma City on the first train this morning, did you?" asked the youth.

"I did."

"How did it happen that you took this train back?"

"I spotted you. The moment I saw your face I knew you, and I shadowed you till the train started. I boarded the train with the determination to capture you. I seldom fail when I have resolved on a thing, and I did not fail this time."

"Then this is no joke?"

"You will find it is no joke."

"Well, I can't ride from this place to Elreno with my hands held above my head, as you must very well know."

"Of course you can't. I'll have to put the irons on you. Here, young man, hold this revolver to his head while I handcuff and search him."

He spoke to Cholly De Smythe, who had been watching, with staring eyes, his jaw dropped, and a look of amazement on his face.

"Haw?" squawked the dude, aghast. "What ith that you want, thir?"

"Take this revolver, and hold it to this boy's head. If he moves, shoot him as if he were a dangerous dog."

"Good gwacious!" gurgled Cholly. "I nevah touched a wevolver in awl my life! You will hawve to excuse me, thir."

"If you are determined to treat me as if I were a mad beast, I beg you to let some one who knows something about firearms handle that revolver," said the captive. "I will give you my word not to make any trouble if you lower the weapon."

"Your word does not count with me," declared the crafty detective. "I wouldn't trust you a second—not a second."

"I can show you my card, letters, and other papers to prove my claim that I am Frank Merriwell, a traveler."

"Black Harry would be likely to have such letters and papers ready for just such an emergency. That trick will not count."

"Oh, well, don't fool around with that loaded gun held up against my head! Put on the irons, and give me a chance to rest my arms. Hurry up!"

"Shust led me dake dat revolfer, mine friendt," said the voice of the Jew. "Uf dot poy tries any funny pusiness, he vill be deat, vid der accent on der deat."

"Can I trust you?" cautiously asked Burchel Jones.

"Vell, I dunno. You can uf you vant to. I alvays make a bracdice uf doin' a cash pusiness."

After some hesitation, the tenderfoot detective decided that he could not do better than trust Solomon, and the revolver was surrendered to the Jew.

"Don'd you vink!" commanded Solomon, as he screwed the muzzle of the weapon up against the lad's head. "Uf you do, you