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TABULAR VIEWS OF MINERAL SYSTEMS. 455 KARSTEN's MINERAL SYSTEM in 1808. a. Silica and glucina. b. Silica, with a very slight intermixture of c stances. c. Silica with water. d. Silica with water and alumina. e. Silica, alumina, and lime, or an alkali. f. Silica and magnesia. g. Silica and lime. h. Silica, lime, alumina', and gypsum.' 5. Order, Alumina. 6. — M agnesia. Y. Lime. a. Lime with carbonic acid. b. Lime with phosphoric acid. T I. Class. Earthy Minerals. 1. Order, Zirconia. 2 . Yttria. 3 . Glucina. 4 . Silica. d. fluoric acid, sulphuric acid, boracic acid. 6. Order, Strontian. <). Barytes. It F f * $