104 Chemical examination of the water of the 



A. For Sulphuric Acid. — To the water was added chloride of 

 barium ; it produced cloudiness, but became transparent on the ad- 

 dition of nitric acid. The experiment was repeated on water con- 

 siderably concentrated by evaporation, in which state the cloudiness 

 would not be wholly removed by nitric acid. Sulphuric acid is 

 therefore present. 



B. For Carbonic Acid. — The boiling of the water produced a 

 precipitate (7) which was soluble with effervescence on the addition 

 of hydrochloric acid. A clear portion of the water evaporated to 

 one quarter its bulk, effervesced perceptibly on dropping into it hy- 

 drochloric acid. Hence carbonic acid is an ingredient of the water. 



C. For Nitric Acid. — To half a pint of the water, whose salts, 

 are decomposed by sulphuric acid as far as they are capable of al- 

 teration by this agent, was added hydro-chloric acid, then gold leaf; 

 heat was afterwards applied, and the water kept boiling for one hour. 

 The addition of porto-chloride of tin caused no precipitation. Hence 

 the absence of nitric acid was inferred. 



D. For Boracic Acid. — A portion of the water was evaporated to 

 dryness the residuum decomposed by sulphuric acid, and alcohol 

 added. A gentle heat was applied and the alcohol inflamed : no 

 green color was perceptible. Hence boracic acid is not present. 



E. For phosphoric acid. — To a portion of the water evaporated 

 to dryness, redissolved in nitric acid and precipitated by nitrate of 

 silver, ammonia was added, without affording indications of phospho- 

 ric acid. 



F. For Silicic Acid. — A portion of the residuum from evapora- 

 tion of the water, was heated to redness in a platina crucible, and 

 hydro-chloric acid was affused, which left a distinct slliclous precip- 

 itate. The water having exhibited, (7) during evaporation, the odor 

 of extractive matter, I was led to test it for the newly discovered 

 acids of Berzelius. 



G. For Apocrenic Acid. — Six ounces of the water, (from the 

 new spring,) containing a considerable portion of the flocculent mat- 

 ter above described, were evaporated to a gelatinous consistency and 

 treated, at a boiling heat, with a strong solution of potassa. The 

 solution was suffered to become clear and the supernatant liquid de- 

 canted. It possessed a slightly brown color. To this fluid, satura- 

 ted to excess with acetic acid, acetate of copper was added, without 

 occasioning a precipitate, from whence the absence of apocrenic acid 

 was inferred. 



