VOL. XVII. (3) APPENDIX— WATERS OF CHELTENHAM 



317 



extent of rather more than 30 grains per gallon, which gives to the 

 water on standing a marked alkaline reaction. The amount of sodium 

 sulphate is, in round numbers, rather more than 100 grains per gallon. 

 In both the amount of lithia is so minute that it can be detected only 

 by the spectroscope. The proportion of ferrous carbonate is distinctly 

 higher than in the Magnesia saline waters, but is still insufficient to 

 allow us to regard the Pittville springs as chalybeate. The general 

 character of these waters as represented by the samples sent to me, 

 although not absolutely identical, is still so very similar that, for all 

 practical purposes, they may be regarded as substantially of the same 

 composition. The waters in all probability are derived from the same 

 gathering grounds and the differences in their composition are not 

 greater than may be ascribed to accidental variations, such as all 

 mineral waters are liable to exhibit. 



chloride of sodium, chloride of magnesium, and chloride of calcium, together 

 with a smaller quantity of sulphate of lime, also distinct traces of iodides and 

 bare traces of bromides. Analyst : Lawrence Briant, F.C.S. 



3- — Mineral Water Supplied at Cambray Spa. 



Muriate of Soda . . 



,, Lime . . 



Magnesia 

 Sulphate of Soda . . 

 Carbonate of Lime 



, , Iron 



Grains per Pint 



51-06 



8-60 



a trace 



17-04 



•80 



a mere trace 



This old analysis is by Michael Faraday, F.R.S. 



4- — The Chalybeate Water Supplied at Cambray Spa. 



Grains per Gallon 

 Carbonate of Iron . . . . . . . . . . 7-05 



Muriate of Lime and Magnesia 



and Sulphate of Soda . . 

 Sulphate of Lime 

 Carbonate of Magnesia and Lime 



15-50 



24-00 



9-00 



8-95 



64-50 



X2 



Old Analysis by F. Accum. 



