"While he thought our company not as nice as our room, still, he didn't object to sharing our meat. And, Frank, he wasn't at all stingy about the amount he took, either," Bob complained. "Oh! well, I reckon there's still enough for us, and to spare. Besides, we've got heaps of other things along in our packs, for an emergency, you know. Suppose we make a pot of coffee, and start things." "That's all right, Frank; I'll attend to it," declared Bob; "but why under the sun do you suppose now, that sly old Moqui dodged out like that?" "Well, for one thing, he may have suspected us," replied Frank. "What! after all we did for him, took him in, and forgave his sins, even to offering to mend any broken ribs, if he'd had any, through that horse kick? I can't just understand that," Bob ventured, while he measured out enough ground coffee to make a pot of the tempting hot beverage. "He took the alarm, it seems," Frank went on, indifferently. "Knew we wanted to find the man who had given him the talking paper; and was afraid we might try to make him tell; or, that failing, stalk him when he went to deliver my note. And on the whole I can't much blame the old Indian. Suspicion is a part of their nature. He believed he was on the safe side in slipping away as he did. Forget it, Bob. We've learned a heap by his just dropping in on us, I think." "Sure we have," replied the other, being busily employed over the fire just then. "And I was thinking what he could have meant when he pointed off in the direction I calculate the Grand Canyon lies, and said in answer to one of your questions: 'Seek there! When the sun is red it shines in Echo Cave!'" "I've guessed that riddle, and it was easy," Frank remarked. "Then let me hear about it, because I'm pretty dull when it comes to understanding all this lovely sign language of the Indians," Bob remarked. "Listen, then. The sun is said to be red when its setting; that's plain enough; isn't it, Bob?" "All O.K. so far, Frank. I won't forget that in a hurry, either." "Then, when he said it looked into the cave at sunset, it was another way of telling us the cave faced the west!" Frank continued. "Well, what a silly chap I was not to guess that," chuckled the other. "And from what I know about the bigness of that canyon, Bob, I think that this unknown Echo Cave must be pretty high up on the face of a big cliff to the east of the river." "Why high up? I don't get on to any reason for your saying that?" inquired Bob. "You'll see it just as soon as I mention why," remarked his companion. "When the sun is going down in the west, far beyond the horizon, don't you see that it can only shine along the very upper part of the cliffs? The lower part is already lost in the shadows that drop late in the afternoon in all canyons." "Of course, and it's as plain to me now as the nose on my face," agreed Bob. "Queer, how easy we see these things after they've been explained."