160 



GEOLOGICAL SURVEY OF THE TERRITOEIES. 



Per cent. 



Carbonic acid 11. 80 



Sulpliuric acid 2. 49 



Chlorine 25. 02 



97.64 



The 2,36 per cent, unaccounted for I consider to be principally due 

 to a too low determination of the organic matter, the estimation of 

 which was attended with difficulties, and the small amount of material 

 at my disposal precluding a redetermination. 



The organic matter found in such large quantity was evidently 

 mainly communicated to the water during evaporation, and could 

 scarcely have been contained in the water itself. Professor Persifor 

 Prazer, jr., says the spring is not perceptibly ferruginous, so that the 

 iron found was doubtless from the kettle in which the water was evap- 

 orated. The quartz was present in pieces of appreciable size, and must 

 bave been mechanically suspended in the effervescing water. The 

 small amount of alumina found may have l^een in solution in the water, 

 but more probably accompanied the quartz. Eliminating these sub- 

 stances from the analysis, we may express the composition of the solid 

 ingredients of the water as follows : 



Per cent. 



Chloride of sodium 33. 96 



Chloride of potassium 9. 27 



Carbonate of soda 10. 94 



Sulphate of soda 4. 42 



Silicate of soda 5. 49 



Carbonate of lime 10. 07 



Carbonate of magnesia '5. 40 



Calculating these amounts on the scale of 100 parts, and presuming 

 that the soda, in combination with the silicic acid, was originally in 

 combination with carbonic acid, and calculating, moreover, the carbon- 

 ated salts as bicarbonates, we have : 



Per cent. 



Chloride of sodium 36. 09 



Chloride of potassium 10. 01 



Bicarbonate of soda ." 24. 01 



Sulphate of soda 4. 78 



Bicarbonate of lime 15. 62 



Bicarbonate of magnesia 8. 89 



100. 00 



The water of the spring is thus shown to belong to the class of 



mineral waters characterized by a preponderance of alkaline chlorides 



and carbonates. This class of waters has its principal German types in 



the springs at Ems and 

 appended for comparison. 



Selters in Nassau, analyses of which are 



Kialmclieii 

 Spring, Ems. 



Selters Spring 



Doctor Spring. 



CHoride of sodium 



Chloride of potassinm 



Bicarbonate of soda 



Sulpliate of soda 



TJicarbonate of lime 



Bicarbonate of magnesia. 

 Bicarbonate of iron 



Per cent. 

 27.25 



57.03 

 0.56 

 C.65 

 5.83 

 0.C7 



Per cent. 



0. 85 5 ^~ "^ 

 29.29 

 0.76 

 8.00 

 7. 65 

 0.29 



53 



Per cent, 

 36.69 

 10. 01 

 24.01 



4.78 

 15. C2 



8.69 



46.70 



