Conversations on Chemistry, V. 1-2

--Composition of Ammonia. --Hartshorn and Sal Volatile. --Combustion of Ammoniacal Gas.

CONVERSATION XV.

ON EARTHS. 44

Composition of the Earths. --Of their Incombustibility. --Form the Basis of all Minerals. --Their Alkaline Properties. --Silex; its Properties and Uses in the Arts. --Alumine; its Uses in Pottery, &c. --Alkaline Earths. --Barytes. --Lime; its extensive chemical Properties and Uses in the Arts. --Magnesia. --Strontian.

CONVERSATION XVI.

ON ACIDS. 69

Nomenclature of the Acids. --Of the Classification of Acids. --1st Class --Acids of simple and known Radicals, or Mineral Acids. --2d Class --Acids of double Radicals, or Vegetable Acids. --3d Class --Acids of triple Radicals or Animal Acids. --Of the Decomposition of Acids of the 1st Class by Combustible bodies.

CONVERSATION XVII.

OF THE SULPHURIC AND PHOSPHORIC ACIDS: OR, THE COMBINATIONS OF OXYGEN WITH SULPHUR AND WITH PHOSPHORUS; AND OF THE SULPHATS AND PHOSPHATS. 80

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