Mineral tVaters at Cheltenham. 209 



Experiment \U.— Muriate, acetate, and nitrate of ha- 



rytes rendered both the fresh and boiled water turbid. 



Experiment IV.— Sulphate, nitrate, and acetate of silvet 



produced much cloudiness; even when a few drops of nitric, 



acetic, or sulphuric acid had been previously added to the 



water. 



Experiment V.—JVhite prussiate of iron underwent no 

 change in this water. 



li-KpQTnntniVl.— A plate of polished silver and bismuth 

 suffered no aheration, when kept submersed in the carbo- 

 nated chalybeate water. 



Experiment VII. — Baryies rendered the water milky.- 



Experiment ViU.—Lime ivater produced the same effect; 

 the precipitate again vanished, by the admixture of muriatic 

 acid. 



Experiment 'iX.—Fluate of soda and oxalate of ammonia 

 produced much cloudiness. 



Experiment X. — Sulphuric and nitroiis acid extricated 

 many air bubbles. 



Experiment XL— ^^//ce of gall nut suspended in the 

 water became instantly surrounded by a purple zone, and 

 lastly rendered the water black j boiled water remained un- 

 altered. 



ExpcrmtniXlL— Tincture of callage became reddened 

 with the water at the fountain head, but boiled water suf- 

 fered no change from this test. 



ANALYSIS. 



Experiment I. — Having learnt from the preceding experi- 

 ments, that the water contained earthy carbonates, oxide of 

 iron, &c., 231 cubic inches of it were slowly evaporated to 

 five cubic inches, and when cold filtered. 



Experiment II. — On the product ob ained, muriatic ;cii 

 was made to act, wliich was likewise tmplovedto detach the 

 earthy crust that had been formed on the vesael during the 

 process of evaporation. 



Experiment III. — To this muriatic solution, sulphuric 

 acid was added, and heat applied unlilit became near!/ dry; 



Vol. 31. No. 123. Aug. 1808. O the 



