Galvanic Society of Paris. 63 



silver, this same water immediately yielded a very abundant 

 and very thick precipitate of muriate of silver. A. piece of 

 tin foil plunged in this liquid assumed theideep purple of the 

 precipitate of Cassius. 



Upon decanting this liquor, we observed at the bt)ttom of 

 tlie tube a residue which was at first white, but which on 

 being exposed to the air speedily assumed a dark hue, and 

 which was muriate of silver resulting from the solution of 

 the alloy contained in the gold wire uhich was dissolved by 

 the muriatic acid. 



The tube containing the solution of muriate of soda even 

 emitted a very penetrating smell of soda. The gold wire 

 inserted into it was covered with a dark brown oxide, not 

 very adhesive. The liquor of this tube greened the tincture 

 of violets; with the muriate of lime it produced a milky 

 precipitate. The same trials made with the simple solutioix 

 of muriate of soda neither altered the violet tincture nor 

 troubled the transparency of the muriate of lime. 



The decomposition of the muriate of soda had not been 

 complete in this experiment; the taste of this muriate was 

 also very perceptible. 



The last fact observed was, that the whitish pellicle, which 

 almost entirely covered the interior sides of the tube con- 

 taining the solution of muriate of soda, was not extended to 

 the lower part fastened in the stalk of tin which served as 

 a support ; so that it seems the light had some influence 

 upon this effect. 



It results from this experiment, that with the apparatus 

 employed by the Galvanic Society we may obtain at once, 

 easily, artd without giving reason for any doubt, oxynmrialic 

 acid diluted in distilled water, and that we also obtain the 

 separation of the soda from the muriate of soda. 



As to the manner in which these chemical pha^nomena 

 operate, or as to the causes which transform distilled water 

 into oxvmuriatic acid, without the solution of muriate of 

 soda retaining in its decomposition any apparent trace of the 

 presence of this acid, the Galvanic Society has not as yet 

 hazarded an opinion. Thev have confined themselves to 

 varying ihc experiments, in order, if possible, to throw new 



litdit 



