86 Analydsbf the lately discovered 



reddened from the fresh, but not from the boiled sulphu- 

 retted water. 



Experiment II. — Tircfure ofttirmeric suffers no change. 



Experiment I I. — Silver leaf acquired a slight iridescent 

 tarnish, after havino- been immersed in this water for three 

 davs ; the boiled sulphuretted water did not atfcct the lustre 

 of this metal. 



Experimeitt IV. — Quicksilver exposed to the action of 

 this water retained its brilliancy, but being suspended in a 

 muslin bag in the covered reservoir of the well, it acquired a 

 tarnish within 24 hours. 



Experiment V, — Bismuth, disposed in a like manner, lost 

 its lustre, and became brown. 



Experiment \].—lVhite oxirJe of bismi/tli, fresh prepared, 

 and still moist, diffused through the sulphuretted water be- 

 came black in 12 hours. 



Experimrnt VI 1. — Arsenious acid and muriate of arsenic 

 suffered no change. 



Experiment Vill. — Acetate of silver , of the usual strength, 

 yielded a white precipitate, but when diluted it produced 

 an orange-coloured cloud. 



Experiment IX. — Crystals of acetate of copper became 

 black, after having been covered by the water for a few 

 minutes. 



Expcriinent X. — Paper moistened with nitrate of mercury 

 acquired a brown colour when kept immersed for three 

 hours in the water. 



Experiment XI. — Sticcinate of ammonia, pruinate of pot- 

 ash, gallic acid, and tincture of gaUu Neither of these 

 re-ascnts produced a change in the fresh water, or in such 

 as had been concentrated by evaporation. 



Experiment XII. — Lime water produced a cloudiness. 



Experiment Xll f. — Crystallized hydrate of larytes and 

 hydrate of strontia occasioned much precipitate, both in 

 the water at the fountain head, and in such as had been con- 

 centrated by evaporation. 



Experiment XIV. — Muriate, acetate and nitrate of ha- 

 ryles effected a copious precipitate. 



Experiment XV. — Oxalate of ammonia, oxalic acid, and 



fuate 



