_Plombières_, among the Vosges Mountains, has an elevation of 1310 feet. The water contains only 2 grains of solid ingredients to the pint, but the temperature is high, varying from 80° Fahr. to 160° Fahr. Some of the hot springs at _Ems_, such as the Fürstenbrunnen, with a temperature of 95° Fahr., and the Neuequelle, with a temperature of 117° Fahr., are used for bathing. At _Aix-les-Bains_, in Savoy, 768 feet above the sea-level, will be found two hot springs, varying in temperature from 106° Fahr. to 116° Fahr. These waters contain less than 4 grains of solid ingredients to the pint, but one of them, containing an appreciable amount of sulphuretted hydrogen, is known as the sulphur spring. Aix was known to the Romans, and in the modern town will be found every bathing appliance which art can contrive. At _Mont Doré_ and at _Bourboule_, in the department of Puy de Dôme, in France, at an elevation of 3400 feet above the sea, are thermal springs having a temperature of 104° Fahr. to 114° Fahr. Having enumerated the chief warm baths in Europe, we will proceed to catalogue some of the best known of the salt baths. _Droitwich_, in Worcestershire, is perhaps the only place in England where concentrated salt baths can be obtained. The brine of Droitwich is said to contain as much as 2760 grains to the pint. The town is uninteresting. At _Ischl_, in the Salzkammergut, is a concentrated brine containing 1900 grains to the pint. It is 2000 feet above the sea-level, and the country is charmingly picturesque. _Kreuznach_, not far from Bingen on the Rhine, has a strong salt spring, and is much resorted to by scrofulous patients. The mother-lye of Kreuznach is said to contain 2400 grains to the pint. These strong brines are only used after proper dilution. The water of _Soden_, in the Taunus hills, contains 160 grains to the pint; and at _Homburg_ are found several springs which have about 90 grains to the pint. _Kissingen_ is a fashionable watering place in the north of Bavaria, with an elevation of about 800 feet above the sea-level. Here will be found all the accessories of bath life. The water contains about 60 grains of solid ingredients to the pint. The _Wood Hall Spa_, near Lincoln, is a salt spring containing as much as 160 grains to the pint. _Rehme_, in Westphalia, is situated on the Cologne and Minden railway. The water has nearly 250 grains of salt to the pint, and is very highly charged with carbonic acid. The natural temperature of the water is 92° Fahr. There is every facility at Rehme for administering baths of all kinds and of all degrees of concentration. _Nauheim_ is not far from Homburg, among the Taunus hills, and possesses a water very similar to that of Rehme, having from 170 to 291 grains to the pint, being highly charged with carbonic acid, and having a temperature of from 80° Fahr. to 94° Fahr. The elevation of Nauheim above the sea-level is 450 feet. The salt baths of Rehme and Nauheim enjoy a very wide reputation.