Mr. M. F. Leach had performed some amateur detective work, and had exhibited so much acuteness that he was regarded as one of the ablest catchers of lawbreakers in the West. He was at once secured to work up the great train robbery. To him is due the larger share of the credit for tracking down the Big Springs bandits. And the men Leach had to deal with were keen, adroit, and endowed with extraordinary effrontery. We cannot enter into detail concerning his remarkable pursuit of Sam Bass and his companions, from Ogallala. A full narrative would fill a volume. To show the character of the men with whom he had to deal, we will relate an anecdote of a meeting he had with Jim Berry, one of the gang, the morning after the robbery. As before stated, the "stockmen," who were no other than the brigands, had returned to their camp at Ogallala, and were there as if nothing had happened, the morning after the robbery. Leach was preparing to go after the robbers. He encountered Jim Berry, who addressed him in a familiar manner: "Well, are you going out after those fellows?" "Yes," said Leach, "that's what I am going to do." "I wonder what they would give me to go along? I might be of service to them." "Well, I can say," said Leach, "that you would certainly receive a liberal compensation for any service you may be able to render." The two men talked together some time, but Berry did not go on the hunt for the train robbers. Mr. Leach proceeded out the road to Sidney, in Cheyenne county, not forgetting on his way to stop off at Big Springs to find, if possible, some clue to the robbers' course after leaving that place. He found part of a red bandana handkerchief, which he secured, and went on to Sidney in a special train which had been provided for his use. A careful examination of the situation in that place was barren of results, and Mr. Leach returned to Ogallala. The "stockmen" had remained in camp two days after the robbery, and then they had marched away--whither--no one knew. Leach had brought with him the piece of red bandana from Big Springs. He was sure the goods had come from his store in Ogallala. While looking about the deserted camp of the "stockmen," Leach discovered the other piece of the bandana which he had brought from Big Springs. The ragged edges of the two pieces fitted exactly. The inevitable inference was that the "stockmen" were the robbers. The direction taken by them was not known, but Leach soon discovered their trail. Then commenced one of the most remarkable pursuits ever known. Leach ascertained that the robbers would probably cross the Kansas Pacific railroad at Buffalo Station, Gove county, Kansas. He was ever on their track, and on many occasions he escaped with his life in a marvelous manner. Once he saw them count the spoils of the robbery, and divide the money, watches and jewelry among themselves. Then he sent a rancheman a long distance, a hundred miles or more, with a dispatch to the commandant at Fort