As they rode he pondered, endeavoring to search out a clew to the perpetrator of the murder, certainly a cold-blooded one, without any provocation. Pete's rifle, the cowboys had said, was clean and therefore had not been fired. Furthermore, the wound was in the back. It had been made by a mushrooming bullet, and the wonder was that the man had lived at all after receiving it. He questioned the cowboys. They knew nothing except that Pete had been found about two miles down on the plain from Shoestring and that his sheep were, presumably, somewhere up the canyon. When Ike sought to know who was in the Esmeraldas, they told him that they had been riding the range for a week and had encountered no one but Pete himself, who, about five days back, had driven into the canyon on his way through the mountains. They had seen nothing of Louisiana, nor had they cut his trail at any time. The wound showed that it had been recently made; within twelve hours, certainly. But the horses had traveled far in the time given them. One of Wallace's riders had ridden back up the canyon to search for possible clews and would, perhaps, have something to say when he returned. They finally arrived at Wallace's ranch, and found there a doctor who had come from a little hamlet situated to the east. His services were no longer of avail, but Ike asked him to extract the bullet, which he did, finding it to be an ordinary mushroomed ball, to all appearance such as was shot from half the rifles used in that country. There was no clew there, and yet Ike kept it, with a grim idea in the back of his mind suggested by tales which Pete had often told of smuggling and vendettas among the Basques of the border between Spain and France. It was when the sack was opened, however, that the real sensation appeared to dwarf the excitement over the murder of the sheep-herder. It was found to contain a number of samples of rock in which appeared speckles and nuggets of free gold, or what certainly looked like it. On that point the doubt was settled by sending the samples to an assayer, and his report left nothing to be desired. He estimated the gold content of the ore to be worth from fifty to eighty thousand dollars a ton. The coroner's inquest, at Maryville, was attended by swarms, who hoped to get from the testimony some clew to the whereabouts of the mine. But many did not wait for that. Before the assayer's report had been received there were prospectors hurrying into the Esmeraldas and raking Shoestring Canyon and the environs. It was generally thought that the Bonanza lay on the southern side of the range, however, and on that side there were many places to search. Pete might have taken almost any route to the top of the divide, and there were very few clews as to just where he had entered the mountains and how he had reached the canyon.