Antimony } { Antimony. Arsenic } { Arsenic. Bismuth } { Bismuth. Cobalt } { Cobalt. Copper } { Copper. Gold } { Gold. Iron } { Iron. Lead } Regulus of { Lead. Manganese } { Manganese. Mercury } { Mercury. Molybdena } { Molybdena. Nickel } { Nickel. Platina } { Platina. Silver } { Silver. Tin } { Tin. Tungstein } { Tungstein. Zinc } { Zinc. Salifiable simple Earthy Substances. _New Names._ _Correspondent old Names._ Lime {Chalk, calcareous earth. {Quicklime. Magnesia {Magnesia, base of Epsom salt. {Calcined or caustic magnesia. Barytes Barytes, or heavy earth. Argill Clay, earth of alum. Silex Siliceous or vitrifiable earth. SECT. I.--_Observations upon the Table of Simple Substances._ The principle object of chemical experiments is to decompose natural bodies, so as separately to examine the different substances which enter into their composition. By consulting chemical systems, it will be found that this science of chemical analysis has made rapid progress in our own times. Formerly oil and salt were considered as elements of bodies, whereas later observation and experiment have shown that all salts, instead of being simple, are composed of an acid united to a base. The bounds of analysis have been greatly enlarged by modern discoveries[36]; the acids are shown to be composed of oxygen, as an acidifying principle common to all, united in each to a particular base. I have proved what Mr Haffenfratz had before advanced, that these radicals of the acids are not all simple elements, many of them being, like the oily principle, composed of hydrogen and charcoal. Even the bases of neutral salts have been proved by Mr Berthollet to be compounds, as he has shown that ammoniac is composed of azote and hydrogen.