In bringing to bay over thirty criminals, one of whom had paid the penalty of his crime on the gallows, master and dog had heretofore been an invincible team.  Old age and physical weakness had now overtaken the dog in an important chase, and the sympathy he deserved was not withheld, nor was he deserted.  Tenderly as a mother would lift a sick child, Banks gathered him in his arms and lifted him to one of the posse on his horse.  To the members of the posse it was a touching scene:  they remembered him but a few months before pursuing a flying criminal, when the latter—­seeing that escape was impossible and turning to draw his own weapon upon the officer, whose six-shooter had been emptied at the fugitive, but who with drawn knife was ready to close with him in the death struggle—­immediately threw down his weapon and pleaded for his life.

Yet this same officer could not keep back the tears that came into his eyes as he lifted this dumb comrade of other victories to a horse.  With an earnest oath he brushed the incident away by assuring his posse that unless the earth opened and swallowed up the robbers they could not escape.  A few hours after taking up the trail, a ranch was sighted and the dog was left, the instructions of the Good Samaritan being repeated.  At this ranch they succeeded in buying two fresh horses, which proved a valuable addition to their mounts.

Now it became a hunt of man by man.  To an experienced trailer like the marshal there was little difficulty in keeping the trail.  That the robbers kept to the outlying country was an advantage.  Yet the latter traveled both night and day, while pursuit must of necessity be by day only.  With the fresh horses secured, they covered a stretch of country hardly credible.

During the day they found a place where the robbers had camped for at least a full day.  A trail made by two horses had left this camp, and returned.  The marshal had followed it to a rather pretentious Mexican rancho, where there was a small store kept.  Here a second description of the two men was secured, though neither one was Peg-Leg.  He was so indelibly marked that he was crafty enough to keep out of sight of so public a place as a store.  These two had tried unsuccessfully to buy horses at this rancho.

The next morning the representative of the express company left the posse to report progress.  He was enabled to give such an exact description of the robbers that the company, through their detective system, were not long in locating the leader.  The marshal and posse pushed on with the same unremitting energy.  The trail was now almost due east.  The population of the country was principally Mexican, and even Mexicans the robbers avoided as much as possible.  They had, however, bought horses at several ranches, and were always liberal in the use of money, but very exacting in regard to the quality of horseflesh they purchased; the best was none too good for them.  They passed north of old Santa Fe town, and entering a station on the line of railway by that name late at night, they were liberal patrons of the gaming tables that the town tolerated.  The next morning they had disappeared.