"It has to our eyes," explained Jack, "because it has turned its head, and we don't see the horns from the point of view that we did before. It would be hard for me to say positively that any of those things were not elk or cattle, but I'm dead sure that they are all antelope, because at this time of the day there would not be any elk in this place; that's one thing; another thing is, if they were cattle they would look different. They would be squarer, broader, heavier. Hold on there! Bend down slow, and slip off your horse!" In a moment the boys were on the ground. "Did you see him?" Jack whispered. "No," answered Donald; "I didn't see anything." "Why, there's a big buck antelope lying there, not seventy-five yards away, and he didn't see us either. I believe we can crawl up close enough to get a shot. Look here, you said just now that you didn't know your pistol, and didn't know how you could shoot with it. Do you want to take mine? I can tell you how it shoots, but I don't know that that'll do much good. If you can get near enough to the buck and can find a place to rest the pistol, you had better shoot at him from a rest." "Well, how are we going to get near him?" asked Donald. "I don't know where he is. You will have to crawl up to him, and when you get to the right place, call me up and I'll shoot." "I think we can get up to him all right," said Jack. "He's lying up on a little bench, and I believe we can crawl along under the bank right close to him. The only danger is that he'll see you when you rise to shoot; and I suppose if you have to shoot at him on the run, you'll miss him." "I'm sure I shall; but let's try, anyhow." They threw down the reins of their horses, and turning toward the valley crept very carefully down into a little sag. Jack pointed ahead to where a great rock showed sixty or seventy yards away. "He's lying right at the foot of that rock; between us and it. Now, we'll have to crawl along this low place, sticking as flat to the ground as we know how, and then when we get within thirty or forty yards, you lift up your head and find him and kill him, if you can. If you miss him, I may take a pop at him; but I'm certain I shan't hit him when he's running. But, say," he cautioned in a whisper, "don't you take your pistol out of your holster until you get ready to shoot, and I won't take mine out either. I'm afraid that if we have them in our hands we might kill each other instead of the antelope." "All right," agreed Donald. Jack threw off his hat and Donald did the same, and the boys crept along very cautiously and slowly. As they advanced, the top of the rock seemed to come nearer and nearer, and at length they were quite close to it. Presently Jack stopped, looked back and motioned with his hand for Donald to creep up beside him.