202 New Publications. 



where displays that sound judgment and eonsideration which 

 so generally distinguish the cultivators of science in Britain. 



2. Essay on the Natural Histori/, Origin, Composiliony and Medici- 

 nal Effects, of Mineral and Thermal Springs. By Meredith 

 Gardner, M. D. 12mo. 1832. 



We have no complete work on the natural history and che- 

 mical and medical nature of springs in our language. This 

 blank in our hterature is ably filled up by Dr Gairdner's trea- 

 tise, which will bear a comparison with the best foreign treatises 

 on this beautiful and important branch of science. We, there- 

 fore, have no hesitation in recommending it to our readers as a 

 work of great merit, and which we are confident will, as soon as 

 known, find a place in every medical library,— be treasured up 

 by our numerous geologists — and become a chief authority and 

 indispensable companion in every watering-place throughout the 

 kingdom. The following table of contents of the volume will 

 shew the arrangement and subjects discussed by Dr Gairdner. 



Introduction, . . • • . . . Page 1 



Chap. I. — Composition of Mineral and Thermal Springs. — Sect. 1. Constitu- 

 ents of Mineral Springs. Alkaline and Earthy Salts : Sulphates, Muriates, 

 Carbonates, Phosphates, Fluates, Borates, Nitrates. Metallic Salts : Iron, 

 Manganese, Zinc. Silica, Iodine, Bromine, Strontian. Free Acids : Car- 

 bonic Acid Gas, Carbonic Acid Exhalations, Sulphureous and Sulphuric 

 Acids, Muriatic Acid Gas. Gases : Sulphuretted Hydrogen, Hydrogen, 

 Azote, Carburetted Hydrogen, Oxygen and Atmospheric Air. Vegeto- 

 animal Matter: Humus extractive. Resinous extractive, Bareglne or 

 Animal extractive — Sect. 2. Amount of the Ingredients of Mineral 

 Springs. Specific Gravity. Amount of Solid Matters. Amount of Gases. 

 Constancy of the Impregnation of Mineral Waters : Of the Solid Matters ; 

 of the Gaseous Matters ; Effect of Seasons, Drought, &c — Sect. 3. Com, 

 binations of the Constituents of Mineral Springs : Upon the Bertholletian 

 theory ; upon the theory of the most Soluble Salts ; Murray's Formula of 

 Analysis ; Theory of Definite Proportions ; Causes of the Discrepancies of 

 Analysis. Classification of Mineral Springs. — Sect. 4. Temperature of 

 Mineral Springs. Supposed greater Specific Caloric. Supposed effect 

 of Carbonic Acid in elevating their Temperature. Degrees of Tempera- 

 ture of Thermal Springs.— Sect. 5. Comparison of Mineral Springs with 

 other Waters. Terrestrial Waters: Common Springs and Wells, Kiver 

 Water, Lake Water, Sea Water. Atmospheric Wa tcrs : Rain and Dew, 

 Ice and Snow, , . . . . . . 5-116 



