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260
A TREATISE ON GEOLOGY.
CHAP. IX.
In Germany, the average temperature of 20 springs is 58.9° above that of the atmosphere.
In France, connected with its central volcanic chain, 12 springs average 69.2° above the air.
In France, connected with the granitic Vosges mountains, 4 springs average 80.2° above the atmosphere.
Connected with the Alps of Dauphine, rising in Jura limestone, &c., 3 springs average 46.7° above the air.
Connected with the Pyrenees, 36 springs average 48.6° above the air.
Connected with the Swiss Alps, 16 springs average 44.8° above the air.
In Croatia, 5 springs average 58.2° above the temperature of the region.
In Styria and Carinthia, 5 springs average 44.6° above the temperature of the place.
In volcanic Hungary, 14 springs average 47° above the temperature of the air.
In volcanic Iceland, springs of various temperatures occur, from the boiling Geysers to a moderate warmth; the hottest being near the site of active volcanos.
In the volcanic island of Ischia, 6 springs average 55.9° above the air.
In Sicily, 2 springs average 55° above the air.
In Italy generally, 19 springs average 52.4° above the air.
In Sardinia, 4 springs average 57.7° above the air.
In Corsica, 2 springs average 59° above the air.
In Portugal, 35 springs average excess of temperature above that of the country about 30°.
In the Caucasus, average of those mentioned by De la Beche, about 60° above the air.
In the Himalaya, on the Jumna River, the temperature of springs appears to exceed that of the air at least 80°.
In China, 3 springs, which issue from granite, probably exceed the temperature of the air from 70° to 120°.
In Japan (volcanic) is a boiling spring.
In Ceylon are springs which exceed the mean temperature about 30°.
On the American continent, the most remarkable collection of springs is on the Ozark mountains; the 70 springs, which here rise in slate rocks, have temperatures which exceed those of the vicinity by 40° to 100°. Others occur in the Rocky Mountains.
In Jamaica, the bath springs in St. Thomas in the East are about 50° above the mean temperature.
