"Which way did he go?" demanded Frank. "Toward town?"

"Nary. I rushed around the corral jest in time to see him p'intin' for Pete Loco's, which is right the other way from town."

"He's made a get-away, boys," said Pardo, "and you might as well give him up."

"We're not going to give him up," Frank answered decidedly. "We've got to keep after him, and run him down. It's—it's important."

"Well, now," protested the super, "you'd better think twice about that. Porter has shown that he won't stop at anything. He don't want to talk with you, does he? He's shown his teeth once; next time he does that he'll probably bite, and bite hard."

"We'll look out for ourselves," put in the impatient Clancy. "He's the fellow we want, Chip. Why did he turn on us as he did if he hasn't a guilty mind?"

"You think," spoke up Pardo, "that he knows what has become of your friend, the professor? Mr. Bradlaugh told me, over the phone," he explained, "why you wanted to talk with Porter."

"It's a cinch, strikes me," answered Merry, "that Porter can tell us something about the missing prof. Wouldn't you figure it out that way, Mr. Pardo?"

"Well, yes," acknowledged the superintendent. "I don't know but I would. What I'm trying to get at is this: Old Nick Porter has proved that he isn't a safe proposition for you boys to tackle."

"You don't know us, Mr. Pardo," laughed Clancy. "That wasn't a fair shake the prospector gave us on top of those cyanide tanks. We ought to keep right after him. If we come close, we'll land on him by strategy."