84 Analysis of the lately discovered 



in contact with it for six hours did not disturb the soKilions 

 of sulphate of silver, nitrate of barytes, and other tests. On 

 evaporating this fluid, muriate of soda was obtained, which 

 gave 16^ grains to each gallon of the water. 



Experiment VIII. — ^The fluid freed from muriate of soda 

 became turbid by phosphate of soda and carbonate of am- 

 monia, by muriate of barytes, but not by muriate of platina. 

 It was concentrated and decomposed by sub-carbonate of 

 soda; the carbonate of magnesia was dissolved in sulphuric 

 acid, and the sulphuric solution, when highly concentrated, 

 was mingled with alcohol. The sulphate of magnesia thuf 

 obtained weighed 40 grains. 



Experiment IX. — On examining the solution it was found 

 that sulphate of silver occasioned a precipitate. This salt 

 was therefore added. The precipitate produced by means 

 of it weighed \b^ grains, which are equal to six grains of 

 muriate of soda, that must have escaped the process of cry- 

 stallization before mentioned. This portion of salt added to 

 that obtained already gives l6^ to each gallon of the water. 



To facilitate the conclusion of the analysis, the residue of 

 231 cubic inches of water of the Chalybeate Weak Saline 

 Well obtained by evaporation, being previously digested in 

 alcohol, v^-as repeatedly digested in small quantities of cold 

 water till this fluid dissolved no more. Into this solution 

 muriate of barytes was dropt, till it produced no further cloudi- 

 ness. The precipitate being collected and weighed, and the 

 sulphuric acid deducted which belonged to the sulphate of 

 magnesia, taking 100 to be equal to 52*11 of sulphate of 

 magnesia, there remained eight grains of sulphate of barytea 

 originating from the decomposed sulphate of soda ; whiclj 

 are equal to 5f- of that salt. 



Over the insoluble residue left a large quantity of boiling 

 water being poured which dissolved the whole — Muriate of 

 barytes produced 105 grains of sulphate of barytes, indica- 

 tinf 72 of sulphate of lime; which indicate nine grains of 

 this salt in each gallon of the water. 



Contents 



