"Them fellars have got some dis'pline," commented the saturnine mate.

"You're right they hev," said the Captain.

"That lad don't know how to handle my pet rattlesnake," was the Captain's comment when the Mexican trailed Jo to the drinking pool. After Jo had returned from making his rounds and had resumed his guard again, the Captain decided that the time had come for action.

"Now, lads," he ordered, "pull off your shoes and the first man that makes a sound will get his neck cracked. Knock 'em out, if necessary, but no killing this time."

Then they started, the Captain in the lead, and old Pete bringing up the rear. They had had a good many hours in that vicinity and had made a path from their hiding place to the soft dust trail. So they moved in their sock feet without a sound. There was an oppressive stillness in that dark canyon under the heavy blanket of fog.

Already it had began to lower and as the sailors advanced with snail-like slowness the heavy white fog settled down, filling the canyon with its white opaqueness. You could not see five feet in front, and the moisture beaded itself upon the eyebrows and mustaches of the men.

This dense fog was a great help to the attacking party. They had now crawled half way down the main trail, when Pete came near putting all the fat in the fire, for his eyesight was not overly keen, and the fog made it more difficult for him. He did not see a round stone poised on the edge of the trail until it rolled down towards the pool.

Although every sound was deadened by the fog, still the watchful Jo heard it distinctly. He got quickly to his feet and, with soft moccasined tread he went in the direction of the sound, his pistol in his hand.

No sooner had the stone fallen than the Captain motioned the mate to halt. This signal was repeated to Jack Cales, who was so hidden by the fog that he could not see the Captain. He stopped suddenly so that old Pete tumbled over him, making some noise.

The Captain almost had a fit of apoplexy because he did not dare express himself at this interesting juncture. Jo had heard the noise on the trail and his suspicions centered in that direction. Noiselessly he went up with slight footprints in the damp dust of the trail. The Captain waited his coming, crouched behind a bend in the trail.