Mercury mercury Ethiops mineral, cinnabar.
Molybdena molybdena
Nickel nickel
Gold gold
Platina platina
Lead lead Galena.
Tungstein tungstein
Zinc zinc Blende.
{ Alkaline liver of sulphur
Potash potash { with fixed vegetable alkali.
{ Alkaline liver of sulphur
Soda soda { with fixed mineral
{ alkali.
{ Volatile liver of sulphur,
Ammoniac ammoniac { smoaking liquor
{ of Boyle.
Lime lime Calcareous liver of sulphur.
Magnesia magnesia Magnesian liver of sulphur.
Barytes barytes Barytic liver of sulphur.
Argill argill Yet unknown.
SECT. VIII.--_Observations on Sulphur, and its Combinations._
Sulphur is a combustible substance, having a very great tendency to
combination; it is naturally in a solid state in the ordinary
temperature, and requires a heat somewhat higher than boiling water to
make it liquify. Sulphur is formed by nature in a considerable degree of
purity in the neighbourhood of volcanos; we find it likewise, chiefly in
the state of sulphuric acid, combined with argill in aluminous schistus,
with lime in gypsum, &c. From these combinations it may be procured in
the state of sulphur, by carrying off its oxygen by means of charcoal in
a red heat; carbonic acid is formed, and escapes in the state of gas;
the sulphur remains combined with the clay, lime, &c. in the state of
sulphuret, which is decomposed by acids; the acid unites with the earth
into a neutral salt, and the sulphur is precipitated.
150