"And not one of 'em has a gun out," added Bud. "I reckon they are making this a sort of test so they can claim we fired on 'em first if it comes up in a law court. Well, we aren't exactly _firing_ at 'em," he chuckled. "We're just _stoning_ 'em." "And we'd better begin to stone!" cried Nort. He drew back the strong rubber bands of his sling. In the leather piece was a round pebble. Nort took aim at one of the approaching Mexicans. The skirmishing was about to begin. CHAPTER XIX OPEN WARFARE "Zip!" a stone from Nort's sling cut the air with a vicious ping, and not only that, but it caught one of the Greasers on the side of his head. He uttered a cry, dropped his reins and clapped a hand to the smarting place. Another instant and he had lost control of his horse, which first swam down stream and then turned to go back to the shore he had left. One reason for this was that Nort had let fly a stone that took the horse on the flank. And Nort was careful not to shoot as hard at the horse as he had at the rider. In fact the horse was not hurt at all--merely frightened, for the stone was like a fly-bite. But it was enough. Meanwhile the other defenders of Spur Creek had been using their slings to advantage, first stinging the Greaser riders with vicious stones and then, more lightly, tapping the horses to demoralize them rather than to hurt them. This sort of warfare proved most effective, for by turning the horses and sending them back, in spite of all the efforts of their riders, the forces of the sheep herders were thrown into confusion. And this, really, was the object of Bud and his companions. They did not want to kill so much as a single sheep. All they desired was to keep inviolate the land rightfully owned by Mr. Merkel. And he felt that he still owned it, in spite of the action of the United States Congress, and even though his papers had been stolen. In this initial skirmish, which soon developed into a fight, the advantage, at first, was all on the side of the Diamond X force as the Greasers did not fight back. Some of them carried guns, but did not draw them. It might be reasoned that they wanted to go into court with "clean hands," as the legal term is. That is, they could claim they were fired upon when attempting to make a peaceable crossing of the creek in order to pasture their sheep on the new government open range land. One part of their contention might be true, but the one implying that Mr. Merkel's land could be taken by any chance comer, was not true. At any rate, first along, the Mexicans did not fire back. Meanwhile Bud and his comrades were fairly peppering the Greasers with stones from the rubber slings. No one was badly hurt--indeed, bruised faces and hands were about the only injuries, but if you have ever faced a fusilade from a battery of putty blowers or bean shooters you know how disconcerting it is.