On our return to the lake from this basin we passed up the Fire-Hole River to its source in the divide. Early in the morning, as we were leaving the valley, the grand old geyser which stands sentinel at the head of the valley gave us a magnificent parting display, and with little or no preliminary warning it shot up a column of water about six feet in diameter to the height of a hundred to a hundred and fifty feet, and by a succession of impulses seemed to hold it up steadily for the space of fifteen minutes, the great mass of water falling directly back into the basin, and flowing over the edges and down the sides in large streams. When the action ceases, the water recedes beyond sight, and nothing is heard but the occasional escape of steam until another exhibition occurs. This is one of the most accommodating geysers in the basin, and during our stay played once an hour quite regularly. On account of its apparent regularity, and its position overlooking the valley, it was called by Messrs. Langford and Doane "Old Faithful." It has built up a crater about twenty feet high around its base, and all about it are decorations similar to those previously described. On the morning of August 6 we ascended the mountains at the head of the Fire-Hole River, on our return to the hot-spring camp on the Yellowstone Lake. We had merely caught a glimpse of the wonderful physical phenomena of this remarkable valley. We had just barely gleaned a few of the surface observations, which only sharpened our desire for a larger knowledge. There is no doubt in my mind that these geysers are more active at certain seasons of the year than at others. We saw them in midsummer, when the surface waters are greatly diminished. In the spring, at the time of the melting of the snows, the display of the first-class geysers must be more frequent and powerful. We left this valley, with its beautiful scenery, its hot springs and geysers, with great regret. THE COUNTRY OF THE CLIFF-DWELLERS. ALFRED TERRY BACON. [Ruskin, among his reasons for not visiting the United States, declared that it would be impossible for him to exist, even for a short interval, in a country that had no old castles. Had he known it, he might have found here old castles in abundance, older perhaps, and grander in situation, than any to be found in his own land. These are the ruined dwellings of the ancient inhabitants of the western canons and of the pueblo-builders of Arizona and New Mexico. We give a traveller's account of the Cliff-dwellers' habitations.]