“Ah! Thank you: I've a letter for you--somewhere. Here it is.” He produced a note from his breast-pocket. Bradley stooped to a sitting posture in the window. “Pitch it up.” It was thrown and caught cleverly. Bradley opened it, read it hastily, smiled and nodded, glanced behind him as if to implore further delay from the impatient machinery, leaned perilously from the window, and said,-- “Look here! Do you see that silver-fir straight ahead?” “Yes.” “A little to the left there's a trail. Follow it and skirt along the edge of the canyon until you see my house. Ask for my wife--that's Mrs. Bradley--and give her your letter. Stop!” He drew a carpenter's pencil from his pocket, scrawled two or three words across the open sheet and tossed it back to the stranger. “See you at tea! Excuse me--Mr. Mainwaring--we're short-handed--and--the engine--” But here he disappeared suddenly. Without glancing at the note again, the stranger quietly replaced it in his pocket, and struck out across the fallen trunks towards the silver-fir. He quickly found the trail indicated by Bradley, although it was faint and apparently worn by a single pair of feet as a shorter and private cut from some more travelled path. It was well for the stranger that he had a keen eye or he would have lost it; it was equally fortunate that he had a mountaineering instinct, for a sudden profound deepening of the blue mist seen dimly through the leaves before him caused him to slacken his steps. The trail bent abruptly to the right; a gulf fully two thousand feet deep was at his feet! It was the Great Canyon. At the first glance it seemed so narrow that a rifle-shot could have crossed its tranquil depths; but a second look at the comparative size of the trees on the opposite mountain convinced him of his error. A nearer survey of the abyss also showed him that instead of its walls being perpendicular they were made of successive ledges or terraces to the valley below. Yet the air was so still, and the outlines so clearly cut, that they might have been only the reflections of the mountains around him cast upon the placid mirror of a lake. The spectacle arrested him, as it arrested all men, by some occult power beyond the mere attraction of beauty or magnitude; even the teamster never passed it without the tribute of a stone or broken twig tossed into its immeasurable profundity.