* MINERAL WATERS OF DUNBLANE. 453 



The solution coniained also a minute quantity of sulphuric 

 acid ; for after removing any slight excess of oxalic acid that 

 might have been present, it still gave a precipitate on the ad- 

 dition of muriate of barytes. Supposing this, as well as the 

 rest of the sulphuric acid, to have existed in the water in the 

 state of sulphate of lime, it will increase the quantity. of that 

 ingredient, (calculating from the weight of the precipitate of 

 sulphate of barytes obtained), from the 2 grains formerly noti- 

 ced to 2.9. 



There appeared now to remain nothing but pure muriate of 

 soda. The solution by slow evaporation afforded that salt in 

 cubical crystals, which, dried at a low red heat, weighed 24.5 

 grains. Allowing 0.8 of this as the portion of product formed 

 by the action of the muriate of barytes, it leaves 23.7 grains. 

 And if to this be added one grain, as the equivalent of the 

 small portion of sulphate of soda, already noticed as formed by 

 the action of the sulphuric acid on the muriate of soda adhe- 

 ring to the muriate of lime after the operation of the alkohol, 

 it gives the quantity of muriate of soda at 24.7 grains. 



From these results, the solid ingredients in a pint of this wa-- 

 ter appear to be 



Muriate of soda - 24.7 grains. 



Muriate of lime, - 17.6 



Sulphate of lime, - 2.9 



Carbonate of lime, - 0.5 



45.7 



With a trace of iron. 



Having completed the analysis in this manner, I wished to - 

 confirm it by a different method. A very simple one present- 

 VoL. VIL P. II. 3 M ed 



