Tunbridge Wells is a populous village, situated in a sandy but romantic valley in the county of Kent, about five miles from the town of Tunbridge, and thirty─six miles south of London. There are, at this place, many chalybeate springs, all of which nearly resemble each other in their chemical properties. Two of them, however, are chiefly used, each of which yields about a gallon of water in a minute. When first taken from the stone basin into which it flows, the water is perfectly clear and bright, and exhales no particular smell. It does not sparkle in the glass, but a few bubbles slowly separate, and adhere to the sides of the vessel. When it has stood for some hours exposed to the air, it becomes turbid, and otherwise undergoes a very material change. As it does not properly curdle soap, it may be denominated a soft water. The original discovery of this water, as to its medical properties, is usually considered to have been in the reign of James the First. The season for drinking it commences as early as March or April, and continues till November. _294. SPA WATER, the celebrity of which has given a general appellation to most other mineral springs, is a highly carbonated chalybeate water, which contains a great proportion of carbonic acid (26). It has an agreeable acidulous taste, mixed with a strong impression of chalybeate, which remains on the palate for a considerable time after it has been drunk._ _It contains oxide of iron (21), chalk, carbonat of magnesia, carbonat of soda (201), and common salt, together with about forty─five parts in a hundred of carbonic acid gas or fixed air (26); and is sufficiently soft to mix both with milk and soap without curdling._ Spa is a small but celebrated town in the Netherlands. It is situated on the little river Weze, about twenty miles south─east of Liege, and seven miles south─west of Linsburg; and is surrounded by rude and uncultivated mountains, many of which are covered with wood, and others with heath or morasses. In its neighbourhood there are no fewer than sixteen mineral springs, five of which are more celebrated than the others. The most copious and most frequented of the whole is the _Pouhon spring_, in the market─place of Spa. This is a large, slow, and deep spring, the descent to which is by several steps. In cold dry weather the water, when first taken up, appears colourless and perfectly transparent: it scarcely sparkles, but it soon covers the inside of the glass with small air─bubbles, which it also emits very copiously when shaken. During moist weather the surface of the well appears somewhat turbid: and, on the approach of rain, a whistling or humming noise is heard, which is called by the country people the music of the spring.