56 /inalysis of the lately discovered 



to cool. The cryslallized muriate of soda weighed seven 

 grains. 



Experivtrvt IX. — The fluid from which this salt had been 

 removed, being concentrated, was covered with sulphuric 

 acid and evaporated to dryness. The glass bason with its 

 contents was lastly heated until the colour of litmus paper, 

 employed for covering it, remained unaltered. 



Experiment 'K.. — The solid residue, being triturated, was 

 transferred into aFlorence fiask, and digested in four times its 

 quantity of water, and the insoluble part collected on the filter. 

 Hxperiment XI. — The saline liquid which passed the fil- 

 ter having been highly concentrated by evaporation, was 

 mixed, boiling hot, with a solution of sub-carbonate of 

 potash until no further precipitate ftil down. 



Experiment XII. — ^The carbonate cf magnesia produced 

 being dissolved in muriatic acid, and the solution evaporated 

 to dryness, yielded 160 grains of muriate of magnesia : 40 

 grains of muriate of magnesia had therefore been contained 

 in one gallon of the water. 



Experiment XIII. — ^The insoluble part left in Experiment X, 

 was boiled with six tin)es its quantity of sub-carbonate 

 of potash, which rendered it soluble in nitric acid : the ni- 

 tric solution was decomposed by sub carbonate of ammonia, 

 and the produced precipitate converted into muriate of lime 

 in a direct manner. It yielded 144 grains of muriate of 

 lime, which gives 3Q grains of muriate of lime to each gal- 

 lon of water. 



Experiment XIV. — To render the nature and presence of 

 the substances so far detected as certain as possible, an 

 alcoholic solution equal to that operated on was evaporated 

 to dryness, covered with sulphuric acid, heated, and again 

 evaporated to dryness. 



" Experiment XV. — The dry mass being dicestcd in water, 

 the fluid filtered and evaporated, yielded sulphate of mag- 

 nesia. The remaining insoluble substance was dissolved in 

 boiling water, and decomposed by nitrate of barytes ; and 

 lastly, another portion of the substance extracted by alcohol 

 was digested in muriatic acid decomposed by sub-carbonate 



