Who could he be? Sid knew that the Papagoes had long since abandoned this hunting ground. Their tank still remained, filled eternally from season to season with rainfall, the sole reminder of that time when the tribe used to gather here to drive the sheep and antelope into the craters and slaughter them wholesale in the trap thus set. Now the Papagoes had become a pastoral people, raising corn, selling baskets, receiving their beef rations from a beneficent government, which, however, kept them virtually prisoners on two small reservations. This Indian arrow-shooter _might_ be a wandering Yaqui from Mexico, but that was hardly possible. It would go hard with him if caught on this side of the border by any of our rangers! Why did he not come out? Sid was sure that it was because he had heard Blaze’s bark coming up the mountain, followed by the appearance of those hunted sheep. He was lying low. For what? To shoot down the hunter the same way that he had laid low the ram? Well, if he had to wait all day, he would not be _that_ victim, Sid decided, then and there! And meanwhile the ram lay a silent, pathetic heap of horns and hoofs, lonely under the hot sun, surrounded by the gray crags and green acacias that had been his home--while the enigma of his death remained still inscrutable. A stunted green saguarro rose near where he had fallen, a marking-post of the desert; the approach below him was guarded by a sturdy choya, to stumble into which would be agony. For a long time Sid stood watching the place where the arrows had seemed to come from, undecided what to do next. There was a craggy boulder over there, jutting out from the hillside, and behind it strung out cover in the shape of creosote bushes and rocky fastnesses of jumbled granite. But nothing moved. The unknown Indian still lay hidden, watching that ram carcass, too, like a trap set ready to spring. Sid lowered his head slowly, inch by inch, determined to play this waiting game to a finish himself. His muscles were trembling from holding his fixed poise so long and the under tendon of his right knee ached.