£ 8*9 ] 
Obf 3. A fixt Ale ally as 01 . Tartar, per deliq, and 
a volatile one, as Sp. Sal. Armoniaciy caufed a white 
Precipitation, which denotes an aluminous cretaceous 
Earth. 
Obf. 4. A Solution of Salt ofLead, caufes a Cream- 
like, or a troubled milky Colour. 
Obf. 5. The ufual acid Spirits, viz. Spirit of Salt, 
Nitre, and Vitriol, caufe no Alteration ; which {hews 
that the Water is itfelf impregnated with an Acid. 
Obf. 6. The Water, being evaporated to a Pellicule, 
deports faline Cryftals of a rough or auflere Tafte, 
being of a ftyptic Nature,- and feparates a Martial 
yellowifh Okre (which is attracted by the Loadftone), 
and is an Abforbent, for it ferments with Acids. The 
remaining Brine, being evaporated to Drynefs, leaves 
a Salt of a lixivious alcaline Tafte. 
Obf 7. Some of thefe Salts being put into Water, 
Three Parts out of Four diflolve very readily ; but 
One-fourth Part will not difiolve at all, but is of a 
Talcky Nature, and unalterable in the Fire. 
Hence we may obferve, that Chalybeat Waters, as 
long as they retain their natural fulphureous Gas are 
capable of keeping fufpended, or floating in them, 
thefe Talcky Suftances ; but that Boiling drives away 
that fulphureous GaSy upon which this Talcky Sub- 
ftance fubfides, and cannot again be dilfolved in Wa- 
ter, and remains fixt againft the Power of the Fire ; 
for it fuffers no Alteration upon a red-hot Iron, nei- 
ther emitting Flame, nor melting, as neither doth 
Talck itfelf. 
Obf 8. Thefe Chalybeat- waters contain fomewhat 
of the fame Nature as our Cathartic Epfom fait , only 
not fo mild upon the Tongue ; for by this Examen, 
j P 2 when 
1 
