They are situated in the angle of an immense valley at the foot of a hill, behind which extends a chain of mountains. The valley is entirely covered with grass, and the vegetation only decreases a little in the immediate vicinity of the springs. Cottages are built every where in the neighbourhood; the nearest to the springs are only about 700 to 800 paces distant. I counted twelve large basins with boiling and gushing springs; of smaller ones there were many more. Among the gushing springs the Strokker is the most remarkable. It boils and bubbles with most extraordinary violence at a depth of about twenty feet, shoots up suddenly, and projects its waters into the air. Its eruptions sometimes last half an hour, and the column occasionally ascends to a height of forty feet. I witnessed several of its eruptions; but unfortunately not one of the largest. The highest I saw could not have been above thirty feet, and did not last more than a quarter of an hour. The Strokker is the only spring, except the Geyser, which has to be approached with great caution. The eruptions sometimes succeed each other quickly, and sometimes cease for a few hours, and are not preceded by any sign. Another spring spouts constantly, but never higher than three to four feet. A third one lies about four or five feet deep, in a rather broad basin, and produces only a few little bubbles. But this calmness is deceptive: it seldom lasts more than half a minute, rarely two or three minutes; then the spring begins to bubble, to boil, and to wave and spout to a height of two or three feet; without, however, reaching the level of the basin. In some springs I heard boiling and foaming like a gentle bellowing; but saw no water, sometimes not even steam, rising. Two of the most remarkable springs which can perhaps be found in the world are situated immediately above the Geyser, in two openings, which are separated by a wall of rock scarcely a foot wide. This partition does not rise above the surface of the soil, but descends into the earth; the water boils slowly, and has an equable, moderate discharge. The beauty of these springs consists in their remarkable transparency. All the varied forms and caves, the projecting peaks, and edges of rock, are visible far down, until the eye is lost in the depths of darkness. But the greatest beauty of the spring is the splendid colouring proceeding from the rock; it is of the tenderest, most transparent, pale blue and green, and resembles the reflection of a Bengal flame. But what is most strange is, that this play of colour proceeds from the rock, and only extends eight to ten inches from it, while the other water is colourless as common water, only more transparent, and purer.