bear came regularly, back of the hotel, to regale himself on the refuse thrown from the kitchen, and I went to see him; but the mosquitoes were very thick, and proved such an intolerable nuisance that I was obliged to go away without getting a look at the beast. CHAPTER V. THE UPPER GEYSER BASIN. June 24, 1892. After a good night's sleep, we left the hotel at half-past eight this morning for an excursion to the Upper Geyser Basin, forty miles distant. The roads were in bad order, very dusty, and the mosquitoes thick. Geysers and boiling springs were to the right and left, everywhere. At one place we got out of the wagon, and crossed a bridge over a small stream to what is called the Devil's Half Acre. There were really a dozen or more acres, containing great volumes of steam and hot water rushing up and around. Many little streams ran toward a big basin, some of them yellow, some green, and some blue, but on examination I found that the water itself was clear. The mud or clay which formed the bed of the streams, or was being carried along in the current, was colored. We thought the Devil's Half Acre a dangerous as well as a disagreeable place, and, recrossing the little stream, continued on our way, arriving at the hotel at the Upper Geyser Basin in four hours. We had just arrived when we were informed that the famous Old Faithful Geyser, which has spouted for many years every sixty-five minutes, would go off in a short time. It is situated a few rods from the hotel, and as we drew near, it commenced to spout up an immense column of water and steam one hundred and fifty feet or so in height. Then, in about five minutes, it subsided into a hole in the ground. We could hear the roar of the steam and water underneath, the commotion shaking the ground. Soon after this exhibition, another geyser, called the Bee Hive, situated near the hotel, spouted, and made a splendid display. I think we saw in this basin as many as twenty large spouting geysers, and hundreds of boiling springs, many of them of surprising beauty. One, which attracted my attention particularly, was a slowly boiling spring which threw up colored clay, and looked exactly like a large sponge. This was about three feet long, two feet wide, and as many high. Driving along the road, we frequently saw signs put up by the Government: "Do not drive on here," and "Danger"; so one is impressed with the idea that some day the tremendous volcanic power underlying this entire valley may burst out and make one vast crater of lava, mud, water, and steam. CHAPTER VI. THE GRAND CANYON, AND THE FALLS OF THE YELLOWSTONE. GRAND CANYON HOTEL, June 26, 1892.