place should be resorted to for the perfection of the cure, must be left to the judgment of the medical adviser.
III—THE TEPID AND COLD MINERAL SPRINGS.
1. The Sprudelsäuerling is close to the Sprudel, and has a temperature varying from 19° R. (75° F.) to 24° R. (86° F.); it contains 16 grs, solid constituents in 1 lb. of the water; the constituents are the same as are contained in the warm springs, and vary only with regard to their quantities, i. e., sulphate of soda, 6.62 grains; carbonate of soda, 3.70; muriate of soda, 2.89; carbonate of lime, 1.17; sulphate of potash, 0.66; carbonate of magnesia, 0.14; siliceous earth, 0.15; and free carbonic acid, 8.69. This spring agrees best with persons suffering from chronic catarrhal affections of the chest, and is taken pure, or with the addition of one-third of milk or whey, in the dose of from three to six tumblersful.
2. The Sauerbrunn, at the back of the Dorotheenau, may rather be called a gas-spring than a water-spring, as the influx of water is very small. The temperature varies between 7° and 12° R. (48 and 59° F.); it contains very few mineral constituents, only 2 grains in 1 lb. of the water, principally siliceous earth, and somewhat over 20 cubic
