SULPHUR.
This name may be given to any acid coagulated by phlogiſton into a ſolid form. If all metals conſist of certain radical acids ſaturated with phlogiſton, as is highly probable, and with reſpect to arſenic is indubitably proved; then metals ought to find a place here. But until this theory be eſtabliſhed by numerous experiments, we ſhall only rank under this head the compounds which have not a metallic nature.
PHLOGISTON ſaturated with vitriolic acid.
Cronstedt, Min. § 151. Common Brimſtone. Sulphur.
PHLOGISTON ſaturated with aerial acid.
Cronstedt Min. § 154. A. plumbago. Black-lead.
The true compoſition of this has been detected by Mr. Scheele.
PHLOGISTON united to the acid of vitriol and of molybdæna; or what amounts to the ſame, ſulphur joined to the acid of molybdæna.
Cronstedt Min. § 154. b. c. Molybdæna. Molybdæna.
The acid of molybdæna has never yet been obtained quite free from phlogiſton (§ 32). If this acid be of a metallic origin, molybdæna is a mineralized metallic ſubſtance, and ſhould be placed with the other minerals.