MINERAL WATERS OF DUNBLANE. 467 



exhaled, and at the end being raised to redness. The muriate 

 of soda thus obtained, weighed 13.4 grains. By solution and 

 crystallisation it was obtained in cubes. 



The precipitate of oxalate of lime having been thoroughly 

 washed, was exposed in a sand bath to a heat short of redness, 

 until it had ceased to exhale any vapours, and appeared per- 

 fectly dry ; it weighed 23.8 grains. The portion of muriate of 

 lime equivalent to any quantity of oxalate of lime, cannot, as 

 has been already remarked, be exactly assigned, from the diffi- 

 culty of bringing the oxalate to one uniform state of dryness, 

 But, according to the most accurate analyses, 23.8 grains of dry 

 oxalate are equivalent to 20 grains of dry muriate. To avoid 

 any error, however, the oxalate was converted into carbonate 

 of lime by calcination ; and this, decomposed by muriatic acid, 

 afforded 19.5 grains of dry muriate of lime. 



The proportions, then, of the saline ingredients in an Eng- 

 lish pint of the Pitcaithly water, are according to this ana- 

 lysis, 



Muriate of soda, - 13.4 grains. 



Muriate of lime, - 19.5 



Sulphate 0.9 



Carbonate - 0.5 



34.3 



To which are to be added of aerial ingredients, 



Atmospheric air, - 0.5 cubic inch. 

 Carbonic acid gas, - 1 cubic inch. 



It also gives slight indications of the presence of iron ; but; 

 as far as can be judged from the shade of colour produced by 

 tincture of galls, the quantity is much smaller than in the Dun- 

 blane 



