Sulphur Mountains. 157 In the afternoon the weather cleared up, and we rode to the Sulphur Mountains on the east of the lake, These large hills are a very wonderful sight. They are of various colours, a variety of mixtures of red and yellow. From their sides are emitted numerous jets of steam, and masses of bright yellow sulphur are strewed all around them. At the foot, on the eastern side, are the mud geysirs—huge cauldrons of blue mud in different stages of solution. Some bubble and spurt like filthy water ; others are so gross that they can scarcely heave the massive bubbles to the sur- face. They are the centres of broken and dilapidated cones raised by their own sputterings. The highest part of these cones, which was that part towards the mountains, was about three feet. They are, however, continually changing in shape; and I observed that the positions of the cones themselves was different from what they were when I visited them in 1861. All around the soil was very treacherous, consisting of hot mud, with a covering of sulphur about an inch in thickness, which in most places was suffi- ciently strong to bear a man’s weight. When this crust was broken, steam issued forth strongly impregnated with sulphur. The clouds of steam, the roaring, the spluttering, and the splashing of

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