.016 m'neven on the mineral water 



rated in a water bath : Its colour turned to a deep brown, and it dried 

 but imperfectly, although the bath was made to boil toward the last. 

 In consequence I washed it out with alcohol, transferred it into a pla- 

 tinum crucible, and evaporated it over the lamp; When perfectly dry 

 its colour was black, and it was found to have lost 0.82 gr. of its 

 weight. The brown colour of the residuum, and which tinged more or 

 less every solution, as well as the facility with which it was charred and 

 partly consumed, showed that it contained a considerable portion of 

 vegetable extract. It could scarcely be otherwise with a water that 

 strains through the decayed leaves and ligneous remains of a primeval 

 forest. 



5. This residue, on being treated with a little alcohol, left 0.40 gr. of 

 muriate of soda, to which we should add 0.03 of a grain, water of crys- 

 tallization, for the state in which the muriate of soda exists in the 

 spring. 



6. To the remaining 2.85, of the alcoholic extract, there were added 

 a few drops of concentrated sulphuric acid, which immediately occa- 

 sioned a brisk effervescence, and by putting the crucible with its con- 

 tents over the lamp, white vapours of muriatic acid were copiously dis- 

 engaged. The crucible was lastly brought to a red heat to drive off 

 any portion of uncombined sulphuric acid. 



The crucible was then washed out with distilled water, and the sul- 

 phates were thrown upon a filter. There passed a solution of a bitterish 

 taste, and a portion was retained, upon which distilled water was con- 

 tinually dropped until it came off tasteless. The part retained was next 

 boiled with carbonate of potassa, and filtered ; sulphate of potassa passed 

 the filter, and carbonate of lime remained upon it, the whole of which 

 readily dissolved in muriatic acid, and weighed, when dry, 2.35 grains. 

 The bitterish solution was in like manner decomposed by carbonate of 

 potassa, and redissolved in muriatic acid. It yielded of muriate of 



