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256
A TREATISE ON GEOLOGY.
CHAP. IX.
Warm Springs of a part of Germany, &c., yielding Carbonic Acid, &c.
Aix-la-Chapelle.—The Kaiserquelle rises at the junction of clay slate and carboniferous limestone, with a temperature 85° above that of the vicinity; contains of saline ingredients 32 grains in a pint (muriate, carbonate, and sulphate of soda, &c.); evolves nitrogen 69.5, and carbonic acid 30.
Borset.—The Mühlenbend rises with the same geological relations as the last, with a temperature 121.5° above that of the place; contains of saline ingredients 34 grains in a pint (muriate, carbonate, and sulphate of soda, &c.); evolves nitrogen 80 per cent., oxygen 2, and carbonic acid 18.
Ems.—The Rondul rises in argillaceous slate, with a temperature of 81° above that of the place; contains of saline ingredients 28.9 grains in a pint (carbonate, muriate, and sulphate of soda); evolves carbonic acid gas only.
Wiesbaden.—The Kochbrunnen rises in chloride slate, with a temperature of 108° above that of the vicinity; contains of saline ingredients 57 '6 grains in a pint (muriate of soda, lime, and potash); evolves nitrogen 27 per cent., and carbonic acid 73.
(The above springs all rise in or adjoining the slaty rocks.)
Warm Springs of the Pyrenees.
Those of Arles, Preste, Fernet, and Molitz, in the Dep. des Pyrenees Orientales, having temperatures above the vicinity of 85.3°, 71.0°, 72.2°, and 40°; contain of saline ingredients 2, 1, 1.3, 1.3 grains respectively (sulphuret of sodium, &c.); and evolve nitrogen gas only. They rise from granite.
The following are in the same department:—
That of Sorède, having a temperature above the vicinity of 9°; contains of saline ingredients 6.8 grains in a pint (carbonate, sulphate, and muriate of iron); and evolves carbonic acid gas only.
Those of Reynez, Enn, and Thuez, having temperatures above that of the vicinity of 23.7°, 62.0°, and 71° have almost no
