Licence: Public Domain Mark
Credit: The spas of Europe / by Julius Althaus. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![InteriiiittiMit springs- iiifluoncc of the fides—of tlie temper- ature of tlie atiii()S])liere — syphons in tiie interior of the earth —tension of earbonic acid and steam — the S|)rii- del of Carlshad — the Geysers of Iceland — researches of Professor Bunsen — quantity of water furnished l)y the springs — variations in the amount — changes produced in mineral waters by earthquakes CHAPTER 11. THE PHYSICAL PROPERTIES OF THE MINERAL WATERS. I TEMPKRATURE. Influence of temperature upon the gases and solids contained in tlie mineral waters — extensive range of llieir tempera- ture — thermal springs—tabular view of the temperature of the more important mineral waters — the heat is im- parted to springs in the interior of the earth — influence of volcanoes — subterranean fire — the geological condi- tion of the soil — chemical processes —views entertained by Paracelsus, Leopold von Buch and Boussaingault — ab- sorption of carbonic acid by water — Anglada's theory of electromotors — objections to these theories — the heat of thermal springs must l)e due to a cause existing every- where— view of Patricius of Pertusa— in mines the tem- perature increases with the depth — researches of Laplace and Arago — temperature of artesian wells — of the sur- face of the soil — influence of the temperature of the at- mosphere upon that of springs — hot springs rising close to cold ones — the temperature of the Spas not always pro- portionate to the depth from which they rise — Influence of the temperature of the meteoric water — of the elevation of the place — of conduction — of volcanoes — of earth- quakes— of heat and cold, rain and drought—constancy of the temperature of cold and hot springs — the Styx — the Castalian spring— periodical variations Is the heat of Spas different from ordinary heat? theories on](https://iiif.wellcomecollection.org/image/b21976533_0014.jp2/full/800%2C/0/default.jpg)
