As Houston approached the house, Miss Gladden and Lyle were standing together in the porch. He greeted both ladies with even more than his usual courtesy, but as his eyes met those of Miss Gladden, there was that in his glance, which in itself, was a declaration of his love for her. Lyle, with her quick intuition, read the meaning, and with her natural sense of delicacy, as quickly withdrew, leaving them together. For an instant, Miss Gladden's eyes dropped before Houston's glance, while a lovely color suffused her cheek; then she raised her eyes, meeting his with an answering glance, and in that mutual recognition, though no word was spoken, they knew that they were lovers, and that was enough for the present. Of late, the four friends had spent much time together; sometimes climbing the mountains, to watch from their lofty summits the setting sun, slowly descending amid clouds of flame, whose glowing colors were reflected from the surrounding peaks in ever varying tints; the rose changing to amethyst and violet, and the violet deepening to purple; while far below, the canyon lay wrapped in soft, gray twilight. Or, sometimes, taking one or two boats from the little boat-house built for the accommodation of summer tourists, they rowed about the lake in the moonlight. On this particular night, Rutherford proposed a row, in one of the larger boats, the entire length of the lake, to the cascades, to which the rest readily acceded. The ladies soon appeared in light, fleecy wraps, Miss Gladden carrying a fine guitar, which called forth exclamations of pleasure from the gentlemen. "Good!" said Rutherford, "that will be just the thing; now we will have some music." "Miss Gladden," said Houston, "why have we not been favored in this way earlier?" "Oh," she replied, archly, "it has never been a necessity until to-night, but a long row in the moonlight would not be perfect without music." This was their first trip to the end of the lakes, and they found the scene beautiful beyond description. On one side an almost perpendicular wall of rock; in the opposite direction, the mountain ranges stretching far away in the distance, with snowy peaks gleaming here and there, like watch towers; while just before them, the shimmering cascades in the wondrous beauty of the moonlight, the deep, unceasing roar seeming to rise and fall with a rhythm of its own. For the first few moments, they sat in silent admiration of the beauty around them; then Miss Gladden touched the strings of the guitar, and began singing in a rich contralto, in which Houston joined with a fine baritone, while Rutherford added a clear, sweet tenor. Their voices blended perfectly, and accompanied by the sweet notes of the guitar, the music floated out over the lake, the lingering echoes dying away, in the distance. Lyle took no part in the song, but sat listening with parted lips and dreamy eyes. When the song was finished, she exclaimed: